The Rit dye seems to work ok, but on my first pass the dye-to-water ratio was not enough. I went with more dye than what the directions said, but it just didn't make them that black. It looks black as black can be in the bucket, but after painting it on it really only darkened the fabric a little. Second pass I'll probably just dilute the pure dye slightly, and instead of using a paintbrush I'll try out a spray bottle to speed things up. Top is after dying, bottom is the original color.