It's not high class art, but it's fun. These are scrap / reject contact prints the younger ones are enjoying. One can actually mix quite a few colors into a big drop of water to get things pretty close with $0.99 paints.
Matte RC paper was used here. The water dries and the paint sticks to the gelatin.

Matte RC paper was used here. The water dries and the paint sticks to the gelatin.

. Anyway, many years ago, I worked up a bit of info for my personal website. I hope that it might be helpful for someone here thinking about taking up handcoloring. 