Some of the new canopy plastics don't take the dye and some will. If you pull up a search right here or go back about two pages you will find a pretty good thread on it. Todays plastics sometimes need some other stuff tossed into the dye pot but you can get most of them to take it. My old ones would only need about 15 minutes to tint up with the ritt but today it usually takes a bit longer, the results are well worth the effort though. And after all these years of doing it I finally destroyed one, I had it in the pot when I turned on the burner and the stove heat rolled it up like a scroll, heat the water then drop in the canopy!!![:@]