/cgl/ - Cosplay & EGL

So I'm about to try making resin charms for the first time with a kit I bought off sophie and toffee. Problem is the kit only included 2 dyes, I don't want to wait another month for dyes to ship so I was wondering of other ways to dye your resin? I heard some people using paint and others saying it's bad, and as a beginner I don't know who to believe. What's the best way to dye resin?

I started playing Moe Girl Cafe after seeing recommendations for it here but when I register there's no where to enter a code and when I'm logged in I can't find anywhere to enter an invite code. I know my own code but how do I use other codes? Any help would be extremely appreciated.