Hello,
1. I think you are looking something like swatch plugin, for example, https://wordpress.org/plugins/color-or-image-variation-swatches-for-woocommerce/ 2. Please add this code in Theme Options > Styling > Custom css or in style.css file of child theme:
.single-product .sku_wrapper { display: none !important; }
3. You’re welcome! 4.
.single_add_to_cart_button { font-family: Lato; }
Regards
