If you aren't moving at a snail's pace, you aren't moving at all. -Iris Murdoch
We spent months working on bleaching/dyeing that plastic media; I hope you're successful where we were not.
Fiber reactive dyes are looking interesting.
Gives me nightmares; we were in the parking lot boiling stuff for weeks :P http://lrrd.blogspot.com/2008/04/r-things-happen-intensely.html