Ah, yes, the plash (cape/poncho). It's a nightmare to dye. I attempted to dye it with hot water and a variety of synthetic dyes, but nothing was really working. Small parts of the plash would take color, but it looked very blotchy. I decided to use a leather dye (from Tandy Leather) and painted it on. While this method worked, the material is much stiffer than before, but I am okay with it.