Add project calendars (merge/refactoring of #490)

app/Controller/App.php

@@ -196,4 +196,14 @@ class App extends Base
             );
         }
     }
+
+    /**
+     * Colors stylesheet
+     *
+     * @access public
+     */
+    public function colors()
+    {
+        $this->response->css($this->color->getCss());
+    }
 }