I have added a new area in the Customizer section which allows a user to choose whichever theme colors they want:

New customizer area

But I don't know how to activate/add CSS files according to the selection.

i.e. add green.css if green theme color is selected

or add blue.css if blue theme color is selected.

  • Look at the code of a theme that already does that. Maybe one of the wp default themes.
    – anmari
    Commented Aug 1, 2018 at 2:51
  • You want to enqueue different css file based on this value? Or add some inline css? Commented Aug 1, 2018 at 5:28

1 Answer 1


You can access Customizer values with get_theme_mod(), so you just need to check the value of your setting before enqueueing stylesheets the normal way:

function wpse_310123_enqueue_scheme_css() {
    $scheme = get_theme_mod( 'theme_scheme' );

    if ( $scheme === 'green' ) {
        wp_enqueue_style( 'theme-green', get_theme_file_uri( 'green.css' ) );
    } elseif ( $scheme === 'blue') {
        wp_enqueue_style( 'theme-blue', get_theme_file_uri( 'blue.css' ) );
add_action( 'wp_enqueue_scripts', 'wpse_310123_enqueue_scheme_css' );

Note that the above code assumes:

  • The name of your Customizer setting is theme_scheme. If it's not, change that to whatever your actual setting is.
  • The possible values are green or blue. If they're something else, like green-theme, then make sure to change those.
  • Your blue.css and green.css files are in the root folder of your theme. If they're not, add the directories to the file name, eg. get_theme_file_uri( 'assets/css/green.css' ).

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