themes from Bootswatch

css/themes/cerulean/_bootswatch.scss

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+// Cerulean 4.0.0
+// Bootswatch
+
+
+@mixin btn-shadow($color){
+  @include gradient-y-three-colors(lighten($color, 8%), $color, 60%, darken($color, 4%));
+}
+
+$text-shadow: 0 1px 0 rgba(0, 0, 0, 0.05) !default;
+
+// Navbar ======================================================================
+
+.bg-primary {
+  @include btn-shadow($primary);
+}
+
+.bg-dark {
+  @include btn-shadow($blue);
+}
+
+.bg-light {
+  @include gradient-y-three-colors(lighten($gray-200, 8%), $gray-200, 60%, darken($gray-200, 2%));
+}
+
+.navbar-brand,
+.nav-link {
+  text-shadow: $text-shadow
+}
+
+// Buttons =====================================================================
+
+.btn {
+  text-shadow: $text-shadow
+}
+
+.btn-primary {
+  @include btn-shadow($primary);
+}
+
+.btn-secondary {
+  @include btn-shadow($secondary);
+  color: $gray-700;
+}
+
+.btn-success {
+  @include btn-shadow($success);
+}
+
+.btn-info {
+  @include btn-shadow($info);
+}
+
+.btn-warning {
+  @include btn-shadow($warning);
+}
+
+.btn-danger {
+  @include btn-shadow($danger);
+}
+
+// Typography ==================================================================
+
+.bg-primary,
+.bg-success,
+.bg-info,
+.bg-warning,
+.bg-danger,
+.bg-dark {
+	h1, h2, h3, h4, h5, h6 {
+		color: $white;
+	}
+}
+
+// Tables ======================================================================
+
+// Forms =======================================================================
+
+// Navs ========================================================================
+
+// Indicators ==================================================================
+
+// Progress bars ===============================================================
+
+// Containers ==================================================================

css/themes/cerulean/_variables.scss

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+// Cerulean 4.0.0
+// Bootswatch
+
+//
+// Color system
+//
+
+$white:    #fff !default;
+$gray-100: #f8f9fa !default;
+$gray-200: #e9ecef !default;
+$gray-300: #dee2e6 !default;
+$gray-400: #ced4da !default;
+$gray-500: #adb5bd !default;
+$gray-600: #868e96 !default;
+$gray-700: #495057 !default;
+$gray-800: #343a40 !default;
+$gray-900: #212529 !default;
+$black:    #000 !default;
+
+$blue:    #033C73 !default;
+$indigo:  #6610f2 !default;
+$purple:  #6f42c1 !default;
+$pink:    #e83e8c !default;
+$red:     #C71C22 !default;
+$orange:  #fd7e14 !default;
+$yellow:  #DD5600 !default;
+$green:   #73A839 !default;
+$teal:    #20c997 !default;
+$cyan:    #2FA4E7 !default;
+
+$primary:       $cyan !default;
+$secondary:     $gray-200 !default;
+$success:       $green !default;
+$info:          $blue !default;
+$warning:       $yellow !default;
+$danger:        $red !default;
+$light:         $gray-100 !default;
+$dark:          $gray-800 !default;
+
+// Body
+
+$body-color:    $gray-600 !default;
+
+// Fonts
+
+$headings-color:         $cyan !default;
+
+// Dropdowns
+
+$dropdown-link-color:            $body-color !default;
+$dropdown-link-hover-color:      $white !default;
+$dropdown-link-hover-bg:         $primary !default;
+
+// Navbar
+
+$navbar-dark-color:                 rgba($white,.8) !default;
+$navbar-dark-hover-color:           $white !default;