ThemePicker::registerCss

private function registerCss()
{
	$theme = $this->getCurrentTheme();
	if (!$theme || !isset($theme["css"]) || !is_array($theme["css"]))
	{
		return;
	}

	foreach ($theme["css"] as $file)
	{
		Asset::getInstance()->addString(
			'',
			false,
			AssetLocation::AFTER_CSS
		);
	}

	if (isset($theme["style"]))
	{
		Asset::getInstance()->addString(
			'',
			false,
			AssetLocation::AFTER_CSS
		);
	}
}