Store selected site color scheme

app/controllers/preferences_controller.rb

@@ -21,7 +21,15 @@ class PreferencesController < ApplicationController
                                     else
                                       params[:user][:preferred_editor]
                                     end
-    if current_user.save
+
+    success = current_user.save
+
+    if params[:site_color_scheme]
+      site_color_scheme_preference = current_user.preferences.find_or_create_by(:k => "site.color_scheme")
+      success &= site_color_scheme_preference.update(:v => params[:site_color_scheme])
+    end
+
+    if success
       # Use a partial so that it is rendered during the next page load in the correct language.
       flash[:notice] = { :partial => "preferences/update_success_flash" }
       redirect_to preferences_path