Originally Posted by MeadowMist

I just took a test swatch of one of the fabrics and put it in a fairly strong bleach solution (50/50 with water) and let it soak for about 5 minutes. And the fabric did not change at all!! If that didn't work I don't think anything will. Way back when I first bought the fabric I was surprised at how much dye was lost when I prewashed it, it was a big difference.