Add blue theme to GitLab

app/assets/stylesheets/pages/profile.scss

@@ -80,6 +80,10 @@
       &.violet {
         background: #548;
       }
+
+      &.blue {
+        background: #2980b9;
+      }
     }
   }
 }

app/assets/stylesheets/themes/ui_blue.scss

+/**
+ * Modern GitLab UI theme
+ */
+.ui_blue {
+  @include dark-theme(#BECDE9, #2980b9, #1970a9, #096099);
+}

app/views/profiles/design.html.haml

@@ -33,6 +33,11 @@
         .prev.violet
         = f.radio_button :theme_id, 5
         Violet
+
+      = label_tag do
+        .prev.blue
+        = f.radio_button :theme_id, 6
+        Blue
     %br
     .clearfix

lib/gitlab/theme.rb

@@ -5,6 +5,7 @@ module Gitlab
     MODERN = 3 unless const_defined?(:MODERN)
     GRAY   = 4 unless const_defined?(:GRAY)
     COLOR  = 5 unless const_defined?(:COLOR)
+    BLUE   = 6 unless const_defined?(:BLUE)
     def self.css_class_by_id(id)
       themes = {
@@ -12,7 +13,8 @@ module Gitlab
         MARS   => "ui_mars",
         MODERN => "ui_modern",
         GRAY   => "ui_gray",
-        COLOR  => "ui_color"
+        COLOR  => "ui_color",
+        BLUE   => "ui_blue"
       }
       id ||= Gitlab.config.gitlab.default_theme