Thanks for the information. I also want to do a black crow feather, but they have a blue/green iridescence. I am having problems coming up with this color. I plan on laying a black dye down first then applying a coat of Dragonfly violet-blue-green color changing paint. Tried a test strip, but to much. Will watering down to thin it out also work, or does someone have a better idea to get the iridescence i am looking for.