Spin Counters Canada

Fantastic app with tons of flexibility! Recently reached out to support regarding an issue and they helped out very quickly. Shopify's default variant system is very limited, so if you're needing more customization (Such as color pickers, and other things that should be a base feature in Shopify...) definitely grab this app.

Don't bother. Usually the first-party shopify apps are good, but dang this one is pathetic. Forms don't load majority of the time, find a free alternative.