"... if the piece you want to color is large, 24"x24" or larger, here is where you may have some problems, if the piece is small, here is the basic. Buy some Rit Dye in the color you want to use, several boxes, because you want to make a very concentrated mixture able to cover the piece to be colored, follow the directions except use half of the amount of water. You now need to heat the mixture to a temprature of 145 to 160, keeping it at that temp., don't exceed 160 or it may start to flex if it's sheeted materials, submerge the piece in the fluid, after a period of time remove and immediately submerge in a cold water bath, when cool, dry it off, if it's not the desired color do it again and again until you get the color saturation you want. Larger pieces can be done the same way in an oven with a deep cookie sheet or cassarole dish, this is diffulcult because of warping. I've done small decorative pieces and rod material this way and have been very successful."