Color Swatch King: Variants

Excellent app, highly recommend!! Purchased as I needed to add swatches to my collection page that could work for more than one option of variants. Added bonus is that you can scroll the swatches so it looks nice and neat. They needed to set this up for me and were quick in making it happen.

Update:
I have been using the app for 5 years now and have to say that their support is one of the best! Anytime I need assistance, they reply within minutes and the communication is great. They easily understand what I want and are quick to resolve any issue.