public function getCustomStylesConfig()
    {
        $styles = [];
        
        if (($config = $this->owner->config()->custom_styles) && is_array($config)) {
            $styles = $config;
        }
        
        ksort($styles);
        
        array_walk($styles, function (&$item) {
            $item = $this->owner->cleanStyleClasses($item);
        });
        
        return $styles;
    }