This is made using an ultraviolet curing dye meant for fabrics. I brush it on, place my object, clamp it in a printing frame, and put it in the sun. Takes about 10 minutes in full sun. Could also use a UV light source, but, I don't have one.
It's just a fun thing to do, and people seem to like it. I sell a few at art shows.
I use the term Ink-O-Dye because that's what I used to use. Now I use Jacquard SolarFast because that's what I can get. Works the same. Here's a link -