wp_style_loader_src( string $src, string $handle )

Administration Screen CSS for changing the styles.


If installing the ‘wp-admin/’ directory will be replaced with ‘./’.

The $_wp_admin_css_colors global manages the Administration Screens CSS stylesheet that is loaded. The option that is set is ‘admin_color’ and is the color and key for the array. The value for the color key is an object with a ‘url’ parameter that has the URL path to the CSS file.

The query from $src parameter will be appended to the URL that is given from the $_wp_admin_css_colors array value URL.



(string) (Required) Source URL.


(string) (Required) Either 'colors' or 'colors-rtl'.


(string|false) URL path to CSS stylesheet for Administration Screens.


File: wp-includes/script-loader.php

function wp_style_loader_src( $src, $handle ) {
	global $_wp_admin_css_colors;

	if ( wp_installing() )
		return preg_replace( '#^wp-admin/#', './', $src );

	if ( 'colors' == $handle ) {
		$color = get_user_option('admin_color');

		if ( empty($color) || !isset($_wp_admin_css_colors[$color]) )
			$color = 'fresh';

		$color = $_wp_admin_css_colors[$color];
		$url = $color->url;

		if ( ! $url ) {
			return false;

		$parsed = parse_url( $src );
		if ( isset($parsed['query']) && $parsed['query'] ) {
			wp_parse_str( $parsed['query'], $qv );
			$url = add_query_arg( $qv, $url );

		return $url;

	return $src;


Version Description
WP-2.6.0 Introduced.