Yes many of the glazes used for painting pottery can be used for painting fabrics as well. You can mix them with soy milk, a little of the iron oxide or pigment will go a long way, I typically use 1 tps to 1 TBS of the pigments and/or oxides to 1 cup soy or acorn milk. When painting wood or leather you can mix the pigments and/or oxides with hide glue.
I typically use acorn milk, as this is what the First Peoples used, and I believe it to be far superior to soy milk. One: it has tannin in the milk aready, from the acorns, and two: it doesn't spoil nearly as fast. I also like the hand afterward, which I feel is superior to soy milk. Howevery, and it's a big however, I have to beat the squirrels to the acorns! That is not an easy task to say the least.
I use the acorn caps as hats for little fairies I'm making. I got the idea from a book called Felt Wee Folk by Sally Mavor , they are absolutely adorable! And I'm not a cute kinda person either. I have adequetly baffled my husband with this habit of making fairies and gnomes. What can I say I can't help myself, and he definately does NOT know what to make of either. It's also a great use of all of those teeny tiny scraps of silk and wool. Oh and did I mention all of those silk flowers I seem to have gathered over the past two decades.
NOTE: Always wear a respirator when handling glazes, iron oxides or pigments of any sort. These things are not good for your lungs or your brain!