By using WooCommerce Swatches Pro you can bulk generate color, multicolor, label, variation first image or custom image swatches to display the available product variation attributes.
Demohttps://codecanyon.net/item/woocommerce-swatches-pro-plugin/25787892
Downloadhttps://www.filecad.com/a1e7/WooCommerce-Swatches-Pro-Plugin-v1.0.0.rar