Show site color scheme on user preferences page

app/views/preferences/show.html.erb

@@ -19,7 +19,11 @@
         <li><%= locale %></li>
       <% end %>
     </ul>
+  </dd>
 
+  <dt class="col-sm-4"><%= t ".preferred_site_color_scheme" %></dt>
+  <dd class="col-sm-8">
+    <%= t ".site_color_schemes.#{preferred_site_color_scheme}" %>
   </dd>
 </dl>
 

config/locales/en.yml

@@ -1807,6 +1807,11 @@ en:
       title: My Preferences
       preferred_editor: Preferred Editor
       preferred_languages: Preferred Languages
+      preferred_site_color_scheme: Preferred Website Color Scheme
+      site_color_schemes:
+        auto: Auto
+        light: Light
+        dark: Dark
       edit_preferences: Edit Preferences
     edit:
       title: Edit Preferences