@flummox的回答很中肯;可以删除、移动和更改现有设置。扩展Flummox的示例。
/**
     * Modify existing / default customizer settings.
     *
     * @param WP_Customize_Manager $wp_customize Customizer manager.
     */
    function my_update_header_text( $wp_customize ) {
                // remove
                $wp_customize -> remove_section(\'display_header_text\');
                // move <-- must remove control first to move the control
                $wp_customize -> get_control(\'display_header_text\') -> section = \'my_theme_options[header]\';
                // change label/description
                $wp_customize -> get_control(\'display_header_text\') -> label = __(\'Display Header Text\');
                // change display order
                $wp_customize -> get_control(\'display_header_text\') -> priority = 10;  
  }
    add_action( \'customize_register\', \'my_update_header_text\', 11 );