I did. I got some of that dye from walmart and used it on some dwr ripstop. I boiled water in my wifes giant cauldron thingy. (She does not know about this by the way. And lets keep it that way.) Then I put in my windshirt. It did absorb some of the dye, but not much. I sprayed it with camp dry to make it repel water again. I considered this a waste of effort. The color did stay in though after repeated washings - it was just not much of a color change. Bottom line - the walmart stuff does not work very well on nylon. By the way, the original dwr treatment was all but gone at the time of this experiment and I do not think it affected the outcome.