'%s/assets/images/header.png', 'random-default' => false, 'width' => 940, 'height' => 240, 'flex-height' => false, 'flex-width' => false, 'default-text-color' => false, 'header-text' => false, /* no option */ 'uploads' => true, 'wp-head-callback' => '__return_false', ); add_theme_support( 'custom-header', $custom_header_args ); /* Registers default headers for the theme. */ register_default_headers( array( 'default' => array( 'url' => '%s/assets/images/header.png', 'thumbnail_url' => '%s/assets/images/header-thumbnail.jpg', 'description' => __( 'Default', 'nevertheless' ) ), ) );