Add support for SASS/SCSS

Refactored less files to be more scss friendly
 * Ensured no variables are used before assignment
 * Removed interpolated variable usage with similar substitute

Added SCSS Grunt tasks
 * convert_less - Converts theme less files to scss
 * swatch_scss - Same as original swatch task, but using sass
 * compress_scss - Same as original compress task, but using sass

Added dependencies for SCSS

Updated _config.yml so jekyll includes theme _bootswatch.scss and _variables.scss files

Added .sass-cache dir to .gitignore

3 files changed, 1343 insertions, 6 deletions

diff --git a/lumen/_bootswatch.scss b/lumen/_bootswatch.scss
new file mode 100644
index 00000000..e0651720
--- /dev/null
+++ b/lumen/_bootswatch.scss
@@ -0,0 +1,481 @@
+// Lumen 3.3.0
+// Bootswatch
+// -----------------------------------------------------
+
+@import url("//fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,700,400italic");
+
+@mixin shadow($width: 4px){
+  border-width: 0 1px $width 1px;
+}
+
+// Navbar =====================================================================
+
+.navbar  {
+  @include shadow();
+}
+
+// Buttons ====================================================================
+
+.btn {
+  padding: $padding-base-vertical+2 $padding-base-horizontal $padding-base-vertical;
+  @include shadow();
+  font-size: 12px;
+  font-weight: bold;
+  text-transform: uppercase;
+
+  &:hover {
+    margin-top: 1px;
+    border-bottom-width: 3px;
+  }
+
+  &:active {
+    margin-top: 2px;
+    border-bottom-width: 2px;
+    @include box-shadow(none);
+  }
+
+  &-lg,
+  &-group-lg > .btn {
+    padding: $padding-large-vertical+2 $padding-large-horizontal $padding-large-vertical;
+    line-height: 15px;
+  }
+
+  &-sm,
+  &-group-sm > .btn {
+    padding: $padding-small-vertical+2 $padding-small-horizontal $padding-small-vertical;
+  }
+
+  &-xs,
+  &-group-xs > .btn {
+    padding: $padding-xs-vertical+2 $padding-xs-horizontal $padding-xs-vertical;
+  }
+
+  &-default:hover,
+  &-default:focus,
+  &-group.open .dropdown-toggle.btn-default {
+    background-color: $btn-default-bg;
+    border-color: $btn-default-border;
+  }
+
+  &-primary:hover,
+  &-primary:focus,
+  &-group.open .dropdown-toggle.btn-primary {
+    background-color: $btn-primary-bg;
+    border-color: $btn-primary-border;
+  }
+
+  &-success:hover,
+  &-success:focus,
+  &-group.open .dropdown-toggle.btn-success {
+    background-color: $btn-success-bg;
+    border-color: $btn-success-border;
+  }
+
+  &-info:hover,
+  &-info:focus,
+  &-group.open .dropdown-toggle.btn-info {
+    background-color: $btn-info-bg;
+    border-color: $btn-info-border;
+  }
+
+  &-warning:hover,
+  &-warning:focus,
+  &-group.open .dropdown-toggle.btn-warning {
+    background-color: $btn-warning-bg;
+    border-color: $btn-warning-border;
+  }
+
+  &-danger:hover,
+  &-danger:focus,
+  &-group.open .dropdown-toggle.btn-danger {
+    background-color: $btn-danger-bg;
+    border-color: $btn-danger-border;
+  }
+
+  &-group.open .dropdown-toggle {
+    @include box-shadow(none);
+  }
+}
+
+.navbar-btn {
+  &:hover {
+    margin-top: 8px
+  }
+
+  &:active {
+    margin-top: 9px
+  }
+
+  &.btn-sm {
+    &:hover {
+      margin-top: 11px
+    }
+
+    &:active {
+      margin-top: 12px
+    }
+  }
+
+  &.btn-xs {
+    &:hover {
+      margin-top: 15px
+    }
+
+    &:active {
+      margin-top: 16px
+    }
+  }
+}
+
+// Typography =================================================================
+
+.text-primary,
+.text-primary:hover {
+  color: $brand-primary;
+}
+
+.text-success,
+.text-success:hover {
+  color: $brand-success;
+}
+
+.text-danger,
+.text-danger:hover {
+  color: $brand-danger;
+}
+
+.text-warning,
+.text-warning:hover {
+  color: $brand-warning;
+}
+
+.text-info,
+.text-info:hover {
+  color: $brand-info;
+}
+
+// Tables =====================================================================
+
+table,
+.table {
+
+  a:not(.btn) {
+    text-decoration: underline;
+  }
+
+  .dropdown-menu a {
+    text-decoration: none;
+  }
+
+  .success,
+  .warning,
+  .danger,
+  .info {
+    color: #fff;
+
+    a:not(.btn) {
+      color: #fff;
+    }
+  }
+
+  > thead > tr > th,
+  > tbody > tr > th,
+  > tfoot > tr > th,
+  > thead > tr > td,
+  > tbody > tr > td,
+  > tfoot > tr > td {
+    border-color: transparent;
+  }
+}
+
+// Forms ======================================================================
+
+.form-control {
+  @include box-shadow(inset 0 2px 0 rgba(0, 0, 0, 0.075));
+}
+
+label {
+  font-weight: normal;
+}
+
+.has-warning {
+  .help-block,
+  .control-label,
+  .form-control-feedback {
+    color: $brand-warning;
+  }
+
+  .form-control,
+  .form-control:focus {
+    border: 1px solid $brand-warning;
+    @include box-shadow(inset 0 2px 0 rgba(0, 0, 0, 0.075));
+  }
+
+  .input-group-addon {
+    border: 1px solid $brand-warning;
+  }
+}
+
+.has-error {
+  .help-block,
+  .control-label,
+  .form-control-feedback {
+    color: $brand-danger;
+  }
+
+  .form-control,
+  .form-control:focus {
+    border: 1px solid $brand-danger;
+    @include box-shadow(inset 0 2px 0 rgba(0, 0, 0, 0.075));
+  }
+
+  .input-group-addon {
+    border: 1px solid $brand-danger;
+  }
+}
+
+.has-success {
+  .help-block,
+  .control-label,
+  .form-control-feedback {
+    color: $brand-success;
+  }
+
+  .form-control,
+  .form-control:focus {
+    border: 1px solid $brand-success;
+    @include box-shadow(inset 0 2px 0 rgba(0, 0, 0, 0.075));
+  }
+
+  .input-group-addon {
+    border: 1px solid $brand-success;
+  }
+}
+
+// Navs =======================================================================
+
+.nav {
+  .open > a,
+  .open > a:hover,
+  .open > a:focus {
+    border-color: transparent;
+  }
+}
+
+.nav-tabs {
+
+  > li > a {
+    margin-top: 6px;
+    border-color: $navbar-default-border;
+    color: $gray-dark;
+    @include transition(all 0.2s ease-in-out);
+  }
+
+  > li > a:hover,
+  > li > a:focus,
+  > li.active > a,
+  > li.active > a:hover,
+  > li.active > a:focus,
+  .open > a,
+  .open > a:hover,
+  .open > a:focus {
+    padding-top: $padding-large-vertical + 3px;
+    padding-bottom: $padding-large-vertical + 3px;
+    margin-top: 0;
+  }
+
+  .open > a,
+  .open > a:hover,
+  .open > a:focus {
+    border-color: $navbar-default-border;
+  }
+
+  > li.disabled > a:hover,
+  > li.disabled > a:focus {
+    padding-top: $padding-large-vertical;
+    padding-bottom: $padding-large-vertical;
+    margin-top: 6px;
+  }
+}
+
+.dropdown-menu {
+  margin-top: 0;
+  @include shadow();
+  border-top-width: 1px;
+  @include box-shadow(none);
+}
+
+.breadcrumb {
+  border-color: darken($breadcrumb-bg, 5%);
+  border-style: solid;
+  @include shadow();
+}
+
+.pagination,
+.pager {
+
+  > li > a,
+  > li > span {
+    position: relative;
+    top: 0;
+    @include shadow();
+    color: $pagination-color;
+    font-size: 12px;
+    font-weight: bold;
+    text-transform: uppercase;
+
+    &:hover {
+      top: 1px;
+      border-bottom-width: 3px;
+    }
+
+    &:active {
+      top: 2px;
+      border-bottom-width: 2px;
+    }
+  }
+
+  > .disabled > a,
+  > .disabled > span {
+
+    &:hover {
+      top: 0;
+      @include shadow();
+    }
+
+    &:active {
+      top: 0;
+      @include shadow();
+    }
+  }
+}
+
+.pager {
+
+  > li > a,
+  > li > span,
+  > .disabled > a,
+  > .disabled > span {
+
+    &,
+    &:hover,
+    &:active {
+      border-left-width: 2px;
+      border-right-width: 2px;
+    }
+  }
+}
+
+// Indicators =================================================================
+
+.close {
+  color: #fff;
+  text-decoration: none;
+  opacity: 0.4;
+
+  &:hover,
+  &:focus {
+    color: #fff;
+    opacity: 1;
+  }
+}
+
+.alert {
+  @include shadow();
+
+  .alert-link {
+    font-weight: normal;
+    color: #fff;
+    text-decoration: underline;
+  }
+}
+
+.label {
+  font-weight: normal;
+}
+
+// Progress bars ==============================================================
+
+.progress {
+  border: 1px solid $navbar-default-border;
+  @include box-shadow(inset 0 2px 0 rgba(0, 0, 0, 0.1));
+
+  &-bar {
+    @include box-shadow(inset 0 -4px 0 rgba(0, 0, 0, 0.15));
+  }
+}
+
+// Containers =================================================================
+
+.well {
+  border: 1px solid $navbar-default-border;
+  @include box-shadow(inset 0 2px 0 rgba(0, 0, 0, 0.05));
+}
+
+a.list-group-item {
+
+  &.active,
+  &.active:hover,
+  &.active:focus {
+    border-color: $list-group-border;
+  }
+
+  &-success {
+    &.active {
+      background-color: $state-success-bg;
+    }
+
+    &.active:hover,
+    &.active:focus {
+      background-color: darken($state-success-bg, 5%);
+    }
+  }
+
+  &-warning {
+    &.active {
+      background-color: $state-warning-bg;
+    }
+    
+    &.active:hover,
+    &.active:focus {
+      background-color: darken($state-warning-bg, 5%);
+    }
+  }
+
+  &-danger {
+    &.active {
+      background-color: $state-danger-bg;
+    }
+    
+    &.active:hover,
+    &.active:focus {
+      background-color: darken($state-danger-bg, 5%);
+    }
+  }
+}
+
+.jumbotron {
+  border: 1px solid $navbar-default-border;
+  @include box-shadow(inset 0 2px 0 rgba(0, 0, 0, 0.05));
+}
+
+.panel {
+  border: 1px solid $navbar-default-border;
+  @include shadow();
+
+  &-default {
+    .close {
+      color: $text-color;
+    }
+  }
+}
+
+.modal {
+  .close {
+    color: $text-color;
+  }
+}
+
+.popover {
+  color: $text-color;
+}
diff --git a/lumen/_variables.scss b/lumen/_variables.scss
new file mode 100644
index 00000000..04ae96b3
--- /dev/null
+++ b/lumen/_variables.scss
@@ -0,0 +1,856 @@
+// Lumen 3.3.0
+// Variables
+// --------------------------------------------------
+
+
+//== Colors
+//
+//## Gray and brand colors for use across Bootstrap.
+
+$gray-base:              #000;
+$gray-darker:            lighten($gray-base, 13.5%); // #222
+$gray-dark:              lighten($gray-base, 20%);   // #333
+$gray:                   lighten($gray-base, 33.5%); // #555
+$gray-light:             lighten($gray-base, 60%);   // #999
+$gray-lighter:           lighten($gray-base, 93.5%); // #eee
+
+$brand-primary:         #158CBA;
+$brand-success:         #28B62C;
+$brand-info:            #75CAEB;
+$brand-warning:         #FF851B;
+$brand-danger:          #FF4136;
+
+
+//== Scaffolding
+//
+//## Settings for some of the most global styles.
+
+//** Background color for `<body>`.
+$body-bg:               #fff;
+//** Global text color on `<body>`.
+$text-color:            $gray;
+
+//** Global textual link color.
+$link-color:            $brand-primary;
+//** Link hover color set via `darken()` function.
+$link-hover-color:      $link-color;
+//** Link hover decoration.
+$link-hover-decoration: underline;
+
+
+//== Typography
+//
+//## Font, line-height, and color for body text, headings, and more.
+
+$font-family-sans-serif:  "Source Sans Pro", "Helvetica Neue", Helvetica, Arial, sans-serif;
+$font-family-serif:       Georgia, "Times New Roman", Times, serif;
+//** Default monospace fonts for `<code>`, `<kbd>`, and `<pre>`.
+$font-family-monospace:   Menlo, Monaco, Consolas, "Courier New", monospace;
+$font-family-base:        $font-family-sans-serif;
+
+$font-size-base:          14px;
+$font-size-large:         ceil(($font-size-base * 1.25)); // ~18px
+$font-size-small:         ceil(($font-size-base * 0.85)); // ~12px
+
+$font-size-h1:            floor(($font-size-base * 2.6)); // ~36px
+$font-size-h2:            floor(($font-size-base * 2.15)); // ~30px
+$font-size-h3:            ceil(($font-size-base * 1.7)); // ~24px
+$font-size-h4:            ceil(($font-size-base * 1.25)); // ~18px
+$font-size-h5:            $font-size-base;
+$font-size-h6:            ceil(($font-size-base * 0.85)); // ~12px
+
+//** Unit-less `line-height` for use in components like buttons.
+$line-height-base:        1.428571429; // 20/14
+//** Computed "line-height" (`font-size` * `line-height`) for use with `margin`, `padding`, etc.
+$line-height-computed:    floor(($font-size-base * $line-height-base)); // ~20px
+
+//** By default, this inherits from the `<body>`.
+$headings-font-family:    inherit;
+$headings-font-weight:    400;
+$headings-line-height:    1.1;
+$headings-color:          $gray-dark;
+
+
+//== Iconography
+//
+//## Specify custom location and filename of the included Glyphicons icon font. Useful for those including Bootstrap via Bower.
+
+//** Load fonts from this directory.
+$icon-font-path:          "../fonts/";
+//** File name for all font files.
+$icon-font-name:          "glyphicons-halflings-regular";
+//** Element ID within SVG icon file.
+$icon-font-svg-id:        "glyphicons_halflingsregular";
+
+
+//== Components
+//
+//## Define common padding and border radius sizes and more. Values based on 14px text and 1.428 line-height (~20px to start).
+
+$padding-base-vertical:     7px;
+$padding-base-horizontal:   12px;
+
+$padding-large-vertical:    13px;
+$padding-large-horizontal:  16px;
+
+$padding-small-vertical:    4px;
+$padding-small-horizontal:  10px;
+
+$padding-xs-vertical:       1px;
+$padding-xs-horizontal:     5px;
+
+$line-height-large:         1.33;
+$line-height-small:         1.5;
+
+$border-radius-base:        4px;
+$border-radius-large:       5px;
+$border-radius-small:       2px;
+
+//** Global color for active items (e.g., navs or dropdowns).
+$component-active-color:    #fff;
+//** Global background color for active items (e.g., navs or dropdowns).
+$component-active-bg:       $brand-primary;
+
+//** Width of the `border` for generating carets that indicator dropdowns.
+$caret-width-base:          4px;
+//** Carets increase slightly in size for larger components.
+$caret-width-large:         5px;
+
+
+//== Tables
+//
+//## Customizes the `.table` component with basic values, each used across all table variations.
+
+//** Padding for `<th>`s and `<td>`s.
+$table-cell-padding:            8px;
+//** Padding for cells in `.table-condensed`.
+$table-condensed-cell-padding:  5px;
+
+//** Default background color used for all tables.
+$table-bg:                      transparent;
+//** Background color used for `.table-striped`.
+$table-bg-accent:               #f9f9f9;
+//** Background color used for `.table-hover`.
+$table-bg-hover:                #f5f5f5;
+$table-bg-active:               $table-bg-hover;
+
+//** Border color for table and cell borders.
+$table-border-color:            #ddd;
+
+
+//== Buttons
+//
+//## For each of Bootstrap's buttons, define text, background and border color.
+
+$btn-font-weight:                normal;
+
+$btn-default-color:              $gray;
+$btn-default-bg:                 $gray-lighter;
+$btn-default-border:             darken($btn-default-bg, 5%);
+
+$btn-primary-color:              #fff;
+$btn-primary-bg:                 $brand-primary;
+$btn-primary-border:             darken($btn-primary-bg, 5%);
+
+$btn-success-color:              #fff;
+$btn-success-bg:                 $brand-success;
+$btn-success-border:             darken($btn-success-bg, 5%);
+
+$btn-info-color:                 #fff;
+$btn-info-bg:                    $brand-info;
+$btn-info-border:                darken($btn-info-bg, 5%);
+
+$btn-warning-color:              #fff;
+$btn-warning-bg:                 $brand-warning;
+$btn-warning-border:             darken($btn-warning-bg, 5%);
+
+$btn-danger-color:               #fff;
+$btn-danger-bg:                  $brand-danger;
+$btn-danger-border:              darken($btn-danger-bg, 5%);
+
+$btn-link-disabled-color:        $gray-light;
+
+
+//== Forms
+//
+//##
+
+//** `<input>` background color
+$input-bg:                       #fff;
+//** `<input disabled>` background color
+$input-bg-disabled:              $gray-lighter;
+
+//** Text color for `<input>`s
+$input-color:                    $gray;
+//** `<input>` border color
+$input-border:                   darken(#f8f8f8, 6.5%);
+
+// TODO: Rename `$input-border-radius` to `$input-border-radius-base` in v4
+//** Default `.form-control` border radius
+$input-border-radius:            $border-radius-base;
+//** Large `.form-control` border radius
+$input-border-radius-large:      $border-radius-large;
+//** Small `.form-control` border radius
+$input-border-radius-small:      $border-radius-small;
+
+//** Border color for inputs on focus
+$input-border-focus:             #66afe9;
+
+//** Placeholder text color
+$input-color-placeholder:        $gray-light;
+
+//** Default `.form-control` height
+$input-height-base:              ($line-height-computed + ($padding-base-vertical * 2) + 4);
+//** Large `.form-control` height
+$input-height-large:             (ceil($font-size-large * $line-height-large) + ($padding-large-vertical * 2) + 2);
+//** Small `.form-control` height
+$input-height-small:             (floor($font-size-small * $line-height-small) + ($padding-small-vertical * 2) + 2);
+
+$legend-color:                   $gray-dark;
+$legend-border-color:            #e5e5e5;
+
+//** Background color for textual input addons
+$input-group-addon-bg:           $gray-lighter;
+//** Border color for textual input addons
+$input-group-addon-border-color: $input-border;
+
+//** Disabled cursor for form controls and buttons.
+$cursor-disabled:                not-allowed;
+
+
+//== Dropdowns
+//
+//## Dropdown menu container and contents.
+
+//** Background for the dropdown menu.
+$dropdown-bg:                    #fff;
+//** Dropdown menu `border-color`.
+$dropdown-border:                $input-border;
+//** Dropdown menu `border-color` **for IE8**.
+$dropdown-fallback-border:       #ccc;
+//** Divider color for between dropdown items.
+$dropdown-divider-bg:            $gray-lighter;
+
+//** Dropdown link text color.
+$dropdown-link-color:            $gray-light;
+//** Hover color for dropdown links.
+$dropdown-link-hover-color:      $gray-dark;
+//** Hover background for dropdown links.
+$dropdown-link-hover-bg:         transparent;
+
+//** Active dropdown menu item text color.
+$dropdown-link-active-color:     $component-active-color;
+//** Active dropdown menu item background color.
+$dropdown-link-active-bg:        $component-active-bg;
+
+//** Disabled dropdown menu item background color.
+$dropdown-link-disabled-color:   $gray-lighter;
+
+//** Text color for headers within dropdown menus.
+$dropdown-header-color:          $gray-light;
+
+//** Deprecated `$dropdown-caret-color` as of v3.1.0
+$dropdown-caret-color:           #000;
+
+
+//-- Z-index master list
+//
+// Warning: Avoid customizing these values. They're used for a bird's eye view
+// of components dependent on the z-axis and are designed to all work together.
+//
+// Note: These variables are not generated into the Customizer.
+
+$zindex-navbar:            1000;
+$zindex-dropdown:          1000;
+$zindex-popover:           1060;
+$zindex-tooltip:           1070;
+$zindex-navbar-fixed:      1030;
+$zindex-modal:             1040;
+
+
+//== Media queries breakpoints
+//
+//## Define the breakpoints at which your layout will change, adapting to different screen sizes.
+
+// Extra small screen / phone
+//** Deprecated `$screen-xs` as of v3.0.1
+$screen-xs:                  480px;
+//** Deprecated `$screen-xs-min` as of v3.2.0
+$screen-xs-min:              $screen-xs;
+//** Deprecated `$screen-phone` as of v3.0.1
+$screen-phone:               $screen-xs-min;
+
+// Small screen / tablet
+//** Deprecated `$screen-sm` as of v3.0.1
+$screen-sm:                  768px;
+$screen-sm-min:              $screen-sm;
+//** Deprecated `$screen-tablet` as of v3.0.1
+$screen-tablet:              $screen-sm-min;
+
+// Medium screen / desktop
+//** Deprecated `$screen-md` as of v3.0.1
+$screen-md:                  992px;
+$screen-md-min:              $screen-md;
+//** Deprecated `$screen-desktop` as of v3.0.1
+$screen-desktop:             $screen-md-min;
+
+// Large screen / wide desktop
+//** Deprecated `$screen-lg` as of v3.0.1
+$screen-lg:                  1200px;
+$screen-lg-min:              $screen-lg;
+//** Deprecated `$screen-lg-desktop` as of v3.0.1
+$screen-lg-desktop:          $screen-lg-min;
+
+// So media queries don't overlap when required, provide a maximum
+$screen-xs-max:              ($screen-sm-min - 1);
+$screen-sm-max:              ($screen-md-min - 1);
+$screen-md-max:              ($screen-lg-min - 1);
+
+
+//== Grid system
+//
+//## Define your custom responsive grid.
+
+//** Number of columns in the grid.
+$grid-columns:              12;
+//** Padding between columns. Gets divided in half for the left and right.
+$grid-gutter-width:         30px;
+// Navbar collapse
+//** Point at which the navbar becomes uncollapsed.
+$grid-float-breakpoint:     $screen-sm-min;
+//** Point at which the navbar begins collapsing.
+$grid-float-breakpoint-max: ($grid-float-breakpoint - 1);
+
+
+//== Container sizes
+//
+//## Define the maximum width of `.container` for different screen sizes.
+
+// Small screen / tablet
+$container-tablet:             (720px + $grid-gutter-width);
+//** For `$screen-sm-min` and up.
+$container-sm:                 $container-tablet;
+
+// Medium screen / desktop
+$container-desktop:            (940px + $grid-gutter-width);
+//** For `$screen-md-min` and up.
+$container-md:                 $container-desktop;
+
+// Large screen / wide desktop
+$container-large-desktop:      (1140px + $grid-gutter-width);
+//** For `$screen-lg-min` and up.
+$container-lg:                 $container-large-desktop;
+
+
+//== Navbar
+//
+//##
+
+// Basics of a navbar
+$navbar-height:                    50px;
+$navbar-margin-bottom:             $line-height-computed;
+$navbar-border-radius:             $border-radius-base;
+$navbar-padding-horizontal:        floor(($grid-gutter-width / 2));
+$navbar-padding-vertical:          (($navbar-height - $line-height-computed) / 2);
+$navbar-collapse-max-height:       340px;
+
+$navbar-default-color:             $text-color;
+$navbar-default-bg:                #f8f8f8;
+$navbar-default-border:            $input-border;
+
+// Navbar links
+$navbar-default-link-color:                $gray-light;
+$navbar-default-link-hover-color:          $gray-dark;
+$navbar-default-link-hover-bg:             transparent;
+$navbar-default-link-active-color:         $navbar-default-link-hover-color;
+$navbar-default-link-active-bg:            transparent;
+$navbar-default-link-disabled-color:       $gray-lighter;
+$navbar-default-link-disabled-bg:          transparent;
+
+// Navbar brand label
+$navbar-default-brand-color:               $navbar-default-link-hover-color;
+$navbar-default-brand-hover-color:         $navbar-default-link-hover-color;
+$navbar-default-brand-hover-bg:            transparent;
+
+// Navbar toggle
+$navbar-default-toggle-hover-bg:           #fff;
+$navbar-default-toggle-icon-bar-bg:        $gray-light;
+$navbar-default-toggle-border-color:       $gray-lighter;
+
+
+// Inverted navbar
+// Reset inverted navbar basics
+$navbar-inverse-color:                      $gray-light;
+$navbar-inverse-bg:                         #fff;
+$navbar-inverse-border:                     darken($navbar-inverse-bg, 10%);
+
+// Inverted navbar links
+$navbar-inverse-link-color:                 $gray-light;
+$navbar-inverse-link-hover-color:           $gray-dark;
+$navbar-inverse-link-hover-bg:              transparent;
+$navbar-inverse-link-active-color:          $navbar-inverse-link-hover-color;
+$navbar-inverse-link-active-bg:             transparent;
+$navbar-inverse-link-disabled-color:        $gray-lighter;
+$navbar-inverse-link-disabled-bg:           transparent;
+
+// Inverted navbar brand label
+$navbar-inverse-brand-color:                $navbar-inverse-link-color;
+$navbar-inverse-brand-hover-color:          $navbar-inverse-link-hover-color;
+$navbar-inverse-brand-hover-bg:             transparent;
+
+// Inverted navbar toggle
+$navbar-inverse-toggle-hover-bg:            $gray-lighter;
+$navbar-inverse-toggle-icon-bar-bg:         $gray-light;
+$navbar-inverse-toggle-border-color:        $gray-lighter;
+
+
+//== Navs
+//
+//##
+
+//=== Shared nav styles
+$nav-link-padding:                          10px 15px;
+$nav-link-hover-bg:                         #fff;
+
+$nav-disabled-link-color:                   $gray-light;
+$nav-disabled-link-hover-color:             $gray-light;
+
+//== Tabs
+$nav-tabs-border-color:                     $navbar-default-border;
+
+$nav-tabs-link-hover-border-color:          $gray-lighter;
+
+$nav-tabs-active-link-hover-bg:             #fff;
+$nav-tabs-active-link-hover-color:          $gray;
+$nav-tabs-active-link-hover-border-color:   $nav-tabs-border-color;
+
+$nav-tabs-justified-link-border-color:            $nav-tabs-border-color;
+$nav-tabs-justified-active-link-border-color:     $body-bg;
+
+//== Pills
+$nav-pills-border-radius:                   $border-radius-base;
+$nav-pills-active-link-hover-bg:            $component-active-bg;
+$nav-pills-active-link-hover-color:         $component-active-color;
+
+
+//== Pagination
+//
+//##
+
+$pagination-color:                     $btn-default-color;
+$pagination-bg:                        $btn-default-bg;
+$pagination-border:                    $btn-default-border;
+
+$pagination-hover-color:               $pagination-color;
+$pagination-hover-bg:                  $pagination-bg;
+$pagination-hover-border:              $pagination-border;
+
+$pagination-active-color:              #fff;
+$pagination-active-bg:                 $brand-primary;
+$pagination-active-border:             $btn-primary-border;
+
+$pagination-disabled-color:            $gray-light;
+$pagination-disabled-bg:               $pagination-bg;
+$pagination-disabled-border:           $pagination-border;
+
+
+//== Pager
+//
+//##
+
+$pager-bg:                             $pagination-bg;
+$pager-border:                         $pagination-border;
+$pager-border-radius:                  15px;
+
+$pager-hover-bg:                       $pagination-hover-bg;
+
+$pager-active-bg:                      $pagination-active-bg;
+$pager-active-color:                   $pagination-active-color;
+
+$pager-disabled-color:                 $pagination-disabled-color;
+
+
+//== Jumbotron
+//
+//##
+
+$jumbotron-padding:              30px;
+$jumbotron-color:                inherit;
+$jumbotron-bg:                   #fafafa;
+$jumbotron-heading-color:        inherit;
+$jumbotron-font-size:            ceil(($font-size-base * 1.5));
+
+
+//== Form states and alerts
+//
+//## Define colors for form feedback states and, by default, alerts.
+
+$state-success-text:             #fff;
+$state-success-bg:               $brand-success;
+$state-success-border:           darken($state-success-bg, 4%);
+
+$state-info-text:                #fff;
+$state-info-bg:                  $brand-info;
+$state-info-border:              darken($state-info-bg, 12%);
+
+$state-warning-text:             #fff;
+$state-warning-bg:               $brand-warning;
+$state-warning-border:           darken($state-warning-bg, 5%);
+
+$state-danger-text:              #fff;
+$state-danger-bg:                $brand-danger;
+$state-danger-border:            darken($state-danger-bg, 10%);
+
+
+//== Tooltips
+//
+//##
+
+//** Tooltip max width
+$tooltip-max-width:           200px;
+//** Tooltip text color
+$tooltip-color:               #fff;
+//** Tooltip background color
+$tooltip-bg:                  #000;
+$tooltip-opacity:             .9;
+
+//** Tooltip arrow width
+$tooltip-arrow-width:         5px;
+//** Tooltip arrow color
+$tooltip-arrow-color:         $tooltip-bg;
+
+
+//== Popovers
+//
+//##
+
+//** Popover body background color
+$popover-bg:                          #fff;
+//** Popover maximum width
+$popover-max-width:                   276px;
+//** Popover border color
+$popover-border-color:                rgba(0,0,0,.2);
+//** Popover fallback border color
+$popover-fallback-border-color:       #ccc;
+
+//** Popover title background color
+$popover-title-bg:                    darken($popover-bg, 3%);
+
+//** Popover arrow width
+$popover-arrow-width:                 10px;
+//** Popover arrow color
+$popover-arrow-color:                 $popover-bg;
+
+//** Popover outer arrow width
+$popover-arrow-outer-width:           ($popover-arrow-width + 1);
+//** Popover outer arrow color
+$popover-arrow-outer-color:           fadein($popover-border-color, 5%);
+//** Popover outer arrow fallback color
+$popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%);
+
+
+//== Labels
+//
+//##
+
+//** Default label background color
+$label-default-bg:            $gray-light;
+//** Primary label background color
+$label-primary-bg:            $brand-primary;
+//** Success label background color
+$label-success-bg:            $brand-success;
+//** Info label background color
+$label-info-bg:               $brand-info;
+//** Warning label background color
+$label-warning-bg:            $brand-warning;
+//** Danger label background color
+$label-danger-bg:             $brand-danger;
+
+//** Default label text color
+$label-color:                 #fff;
+//** Default text color of a linked label
+$label-link-hover-color:      #fff;
+
+
+//== Modals
+//
+//##
+
+//** Padding applied to the modal body
+$modal-inner-padding:         20px;
+
+//** Padding applied to the modal title
+$modal-title-padding:         15px;
+//** Modal title line-height
+$modal-title-line-height:     $line-height-base;
+
+//** Background color of modal content area
+$modal-content-bg:                             #fff;
+//** Modal content border color
+$modal-content-border-color:                   rgba(0,0,0,.2);
+//** Modal content border color **for IE8**
+$modal-content-fallback-border-color:          #999;
+
+//** Modal backdrop background color
+$modal-backdrop-bg:           #000;
+//** Modal backdrop opacity
+$modal-backdrop-opacity:      .5;
+//** Modal header border color
+$modal-header-border-color:   #e5e5e5;
+//** Modal footer border color
+$modal-footer-border-color:   $modal-header-border-color;
+
+$modal-lg:                    900px;
+$modal-md:                    600px;
+$modal-sm:                    300px;
+
+
+//== Alerts
+//
+//## Define alert colors, border radius, and padding.
+
+$alert-padding:               15px;
+$alert-border-radius:         $border-radius-base;
+$alert-link-font-weight:      bold;
+
+$alert-success-bg:            $state-success-bg;
+$alert-success-text:          $state-success-text;
+$alert-success-border:        $state-success-border;
+
+$alert-info-bg:               $state-info-bg;
+$alert-info-text:             $state-info-text;
+$alert-info-border:           $state-info-border;
+
+$alert-warning-bg:            $state-warning-bg;
+$alert-warning-text:          $state-warning-text;
+$alert-warning-border:        $state-warning-border;
+
+$alert-danger-bg:             $state-danger-bg;
+$alert-danger-text:           $state-danger-text;
+$alert-danger-border:         $state-danger-border;
+
+
+//== Progress bars
+//
+//##
+
+//** Background color of the whole progress component
+$progress-bg:                 $jumbotron-bg;
+//** Progress bar text color
+$progress-bar-color:          #fff;
+//** Variable for setting rounded corners on progress bar.
+$progress-border-radius:      $border-radius-base;
+
+//** Default progress bar color
+$progress-bar-bg:             $brand-primary;
+//** Success progress bar color
+$progress-bar-success-bg:     $brand-success;
+//** Warning progress bar color
+$progress-bar-warning-bg:     $brand-warning;
+//** Danger progress bar color
+$progress-bar-danger-bg:      $brand-danger;
+//** Info progress bar color
+$progress-bar-info-bg:        $brand-info;
+
+
+//== List group
+//
+//##
+
+//** Background color on `.list-group-item`
+$list-group-bg:                 #fff;
+//** `.list-group-item` border color
+$list-group-border:             #ddd;
+//** List group border radius
+$list-group-border-radius:      $border-radius-base;
+
+//** Background color of single list items on hover
+$list-group-hover-bg:           #f5f5f5;
+//** Text color of active list items
+$list-group-active-color:       $component-active-color;
+//** Background color of active list elements
+$list-group-active-bg:          $component-active-bg;
+//** Background color of active list items
+$list-group-active-border:      $list-group-active-bg;
+//** Text color for content within active list items
+$list-group-active-text-color:  lighten($list-group-active-bg, 40%);
+
+//** Text color of disabled list items
+$list-group-disabled-color:      $gray-light;
+//** Background color of disabled list items
+$list-group-disabled-bg:         $gray-lighter;
+//** Text color for content within disabled list items
+$list-group-disabled-text-color: $list-group-disabled-color;
+
+$list-group-link-color:         #555;
+$list-group-link-hover-color:   $list-group-link-color;
+$list-group-link-heading-color: #333;
+
+
+//== Panels
+//
+//##
+
+$panel-bg:                    #fff;
+$panel-body-padding:          15px;
+$panel-heading-padding:       10px 15px;
+$panel-footer-padding:        $panel-heading-padding;
+$panel-border-radius:         $border-radius-base;
+
+//** Border color for elements within panels
+$panel-inner-border:          transparent;
+$panel-footer-bg:             #f5f5f5;
+
+$panel-default-text:          $gray-dark;
+$panel-default-border:        transparent;
+$panel-default-heading-bg:    #f5f5f5;
+
+$panel-primary-text:          #fff;
+$panel-primary-border:        transparent;
+$panel-primary-heading-bg:    $brand-primary;
+
+$panel-success-text:          $state-success-text;
+$panel-success-border:        transparent;
+$panel-success-heading-bg:    $state-success-bg;
+
+$panel-info-text:             $state-info-text;
+$panel-info-border:           transparent;
+$panel-info-heading-bg:       $state-info-bg;
+
+$panel-warning-text:          $state-warning-text;
+$panel-warning-border:        transparent;
+$panel-warning-heading-bg:    $state-warning-bg;
+
+$panel-danger-text:           $state-danger-text;
+$panel-danger-border:         transparent;
+$panel-danger-heading-bg:     $state-danger-bg;
+
+
+//== Thumbnails
+//
+//##
+
+//** Padding around the thumbnail image
+$thumbnail-padding:           4px;
+//** Thumbnail background color
+$thumbnail-bg:                $body-bg;
+//** Thumbnail border color
+$thumbnail-border:            $gray-lighter;
+//** Thumbnail border radius
+$thumbnail-border-radius:     $border-radius-base;
+
+//** Custom text color for thumbnail captions
+$thumbnail-caption-color:     $text-color;
+//** Padding around the thumbnail caption
+$thumbnail-caption-padding:   9px;
+
+
+//== Wells
+//
+//##
+
+$well-bg:                     $jumbotron-bg;
+$well-border:                 darken($well-bg, 7%);
+
+
+//== Badges
+//
+//##
+
+$badge-color:                 #fff;
+//** Linked badge text color on hover
+$badge-link-hover-color:      #fff;
+$badge-bg:                    $brand-primary;
+
+//** Badge text color in active nav link
+$badge-active-color:          $link-color;
+//** Badge background color in active nav link
+$badge-active-bg:             #fff;
+
+$badge-font-weight:           normal;
+$badge-line-height:           1;
+$badge-border-radius:         10px;
+
+
+//== Breadcrumbs
+//
+//##
+
+$breadcrumb-padding-vertical:   8px;
+$breadcrumb-padding-horizontal: 15px;
+//** Breadcrumb background color
+$breadcrumb-bg:                 $well-bg;
+//** Breadcrumb text color
+$breadcrumb-color:              $gray-light;
+//** Text color of current page in the breadcrumb
+$breadcrumb-active-color:       $gray-light;
+//** Textual separator for between breadcrumb elements
+$breadcrumb-separator:          ">";
+
+
+//== Carousel
+//
+//##
+
+$carousel-text-shadow:                        0 1px 2px rgba(0,0,0,.6);
+
+$carousel-control-color:                      #fff;
+$carousel-control-width:                      15%;
+$carousel-control-opacity:                    .5;
+$carousel-control-font-size:                  20px;
+
+$carousel-indicator-active-bg:                #fff;
+$carousel-indicator-border-color:             #fff;
+
+$carousel-caption-color:                      #fff;
+
+
+//== Close
+//
+//##
+
+$close-font-weight:           bold;
+$close-color:                 #fff;
+$close-text-shadow:           0 1px 0 #fff;
+
+
+//== Code
+//
+//##
+
+$code-color:                  #c7254e;
+$code-bg:                     #f9f2f4;
+
+$kbd-color:                   #fff;
+$kbd-bg:                      #333;
+
+$pre-bg:                      #f5f5f5;
+$pre-color:                   $gray-dark;
+$pre-border-color:            #ccc;
+$pre-scrollable-max-height:   340px;
+
+
+//== Type
+//
+//##
+
+//** Horizontal offset for forms and lists.
+$component-offset-horizontal: 180px;
+//** Text muted color
+$text-muted:                  $gray-light;
+//** Abbreviations and acronyms border color
+$abbr-border-color:           $gray-light;
+//** Headings small color
+$headings-small-color:        $gray-light;
+//** Blockquote small color
+$blockquote-small-color:      $gray-light;
+//** Blockquote font size
+$blockquote-font-size:        ($font-size-base * 1.25);
+//** Blockquote border color
+$blockquote-border-color:     $gray-lighter;
+//** Page header border color
+$page-header-border-color:    $gray-lighter;
+//** Width of horizontal description list titles
+$dl-horizontal-offset:        $component-offset-horizontal;
+//** Horizontal line color.
+$hr-border:                   $gray-lighter;
diff --git a/lumen/variables.less b/lumen/variables.less
index 7a6aa6fb..df7264af 100644
--- a/lumen/variables.less
+++ b/lumen/variables.less
@@ -183,7 +183,7 @@
 //** Text color for `<input>`s
 @input-color:                    @gray;
 //** `<input>` border color
-@input-border:                   @navbar-default-border;
+@input-border:                   darken(#f8f8f8, 6.5%);
 
 // TODO: Rename `@input-border-radius` to `@input-border-radius-base` in v4
 //** Default `.form-control` border radius
@@ -225,7 +225,7 @@
 //** Background for the dropdown menu.
 @dropdown-bg:                    #fff;
 //** Dropdown menu `border-color`.
-@dropdown-border:                @navbar-default-border;
+@dropdown-border:                @input-border;
 //** Dropdown menu `border-color` **for IE8**.
 @dropdown-fallback-border:       #ccc;
 //** Divider color for between dropdown items.
@@ -356,7 +356,7 @@
 
 @navbar-default-color:             @text-color;
 @navbar-default-bg:                #f8f8f8;
-@navbar-default-border:            darken(@navbar-default-bg, 6.5%);
+@navbar-default-border:            @input-border;
 
 // Navbar links
 @navbar-default-link-color:                @gray-light;
@@ -476,7 +476,7 @@
 
 @jumbotron-padding:              30px;
 @jumbotron-color:                inherit;
-@jumbotron-bg:                   @well-bg;
+@jumbotron-bg:                   #fafafa;
 @jumbotron-heading-color:        inherit;
 @jumbotron-font-size:            ceil((@font-size-base * 1.5));
 
@@ -635,7 +635,7 @@
 //##
 
 //** Background color of the whole progress component
-@progress-bg:                 #fafafa;
+@progress-bg:                 @jumbotron-bg;
 //** Progress bar text color
 @progress-bar-color:          #fff;
 //** Variable for setting rounded corners on progress bar.
@@ -749,7 +749,7 @@
 //
 //##
 
-@well-bg:                     #fafafa;
+@well-bg:                     @jumbotron-bg;
 @well-border:                 darken(@well-bg, 7%);