After create attributes you can display atrribute on product „Quick View“ and Product detail page
Remember tick on all checkbox
– Visible on the product page
– Used for variations
Choose color and any size and upload thumb as color
After set image thumbnail as color and size for product you should set default colour and size to display for product.
If you want display more than one images as color you should upload images for gallery colors as screen shot
If you want display images swatch Choose „Open Swatch“ tab and upload images as color like screen shot