wp_style_loader_src( string $src, string $handle ): string|false

2100function wp_style_loader_src( $src, $handle ) {2101	global $_wp_admin_css_colors;2102 2103	if ( wp_installing() ) {2104		return preg_replace( '#^wp-admin/#', './', $src );2105	}2106 2107	if ( 'colors' === $handle ) {2108		$color = get_user_option( 'admin_color' );2109 2110		if ( empty( $color ) || ! isset( $_wp_admin_css_colors[ $color ] ) ) {2111			$color = 'modern';2112		}2113 2114		$color = $_wp_admin_css_colors[ $color ] ?? null;2115		$url   = $color->url ?? '';2116 2117		if ( ! $url ) {2118			return false;2119		}2120 2121		$parsed = parse_url( $src );2122		if ( isset( $parsed['query'] ) && $parsed['query'] ) {2123			wp_parse_str( $parsed['query'], $qv );2124			$url = add_query_arg( $qv, $url );2125		}2126 2127		return $url;2128	}2129 2130	return $src;2131}