Loopy,
I don't think I'd try the dye job myself, but I do like the colors of picric dyed materials. There are sonme lovely yellows and olives that I've seen. I'm a member of http://ukflydressing.proboards47.com/index.cgi? and there are pictures posted once in a while of picric dyed materials or flies dressed with picric dyed materials that look great. Wouldn't mind trying a bit of those materials myself.
Are you the same Loopy thats a member of WashingtonFlyFishing.Com?
REE
Happiness is wading boots that never have a chance to dry out.