public function getThemeEnabled()
    {
        $plugins = $this->getLoadedPlugins();

        $theme = false;
        foreach ($plugins as $plugin) {
            /* @var $plugin Plugin */
            if ($plugin->isTheme()
                && $this->isPluginActivated($plugin->getPluginName())
            ) {
                if ($plugin->getPluginName() != self::DEFAULT_THEME) {
                    return $plugin; // enabled theme (not default)
                }
                $theme = $plugin; // default theme
            }
        }
        return $theme;
    }