gistfile1.txt

function rp4wp_styling_on_all() {
	global $post;
	
	// Check if the post type is installed
	$pt_manager = new RP4WP_Post_Type_Manager();
	if ( $pt_manager->is_post_type_installed( $post->post_type ) ) {
		// get component related css
		$component_manager = new RP4WP_Manager_Component();
		$css = $component_manager->get_component_css();
		// output css
		if ( '' != $css ) {
			echo "<style type='text/css'>" . $css . "</style>" . PHP_EOL;
		}
	}
}
add_action( 'wp_head', 'rp4wp_styling_on_all' );

add_filter( 'rp4wp_disable_css', '__return_true' );