I happened to go into an art store and found they had Jacquard silk colors on clearance. It says "for silk and wool" so I bought some. Googled it when I got home and found out that you can't use it to immersion dye, which is what I wanted to do. It's not like 'regular' dye in that it has chemicals in it, but what exactly that is, I couldn't find. Apparently the 'red label' doesn't have these chemicals in it.
From what I could tell, you paint and mix the colors on silk, then throw it in the microwave to set or you can by another chemical to set it.
I was planning on dyeing washed fleece/plied yarn on a hot pot in the garage so the fumes wouldn't be an issue.
Has anyone ever tried this? It sounds like an acid dye, but I'll be the first one to admit I'm a dyeing novice.
For immersion dyeing on wool you'll want an acid dye rather than the Jacquard red label. The process is simple and although you can do it in the garage, outdoors works well too. Simple immersion dyeing in solid colors is fairly straightforward and you'll find excellent instructions from Jacquard as well as just about everything else you could ever need at Dharma Trading.
Good Luck, Bitsy