A while ago I started crafting with epoxy resin. At first I just coated objects with clear resin, but recently I experimented with adding colors to it.
I got nice results with powders (like glittery eye shadow) and a tiny bit of acrylic paint, but the result always loses the crystal clarity of the resin and gets somewhat cloudy or opaque.
Next I bought transparent liquid glass paints in the hopes of mixing a more transparent but colorful resin. But to my surprise the color didn't mix with the resin at all and instead formed tiny flakes of (still liquid) color in the otherwise absolutely untinted resin. The effect is not bad, but not at all what I wanted.
The glass color was water soluble, but probably not acrylic paint. It didn't say exactly what was in there on the packaging.
My goal is to find something that will tint the resin but keep it translucent. If I go shopping in my craft store, how do I know which colors will mix with epoxy resin without having to buy a bunch of material for experimentation and ending up not using most of them?
I'd appreciate general answers like "acrylic paints mix well but oil paints don't" instead of naming specific brands of paints that might not be available where I live.
Since I got the best results with powders so far, I thought about buying high quality aquarelle paints (the solid blocks) and grinding them into powder, but I'm afraid the resin will get cloudy / opaque again and the money will be wasted.