This experience has taught me several things -
(1) I am now in the always-wash-fabrics-before-using camp, even though most of my quilts are not bed quilts, they are contemporary wall quilts. However, if I plan to block them, they're going to get wet and I need to take precautions. I own both Retayne and Synthrapol and use them for the appropriate fabrics.
(2) I am going to be much more selective with the hand-dyed fabric that I purchase. Even though reputable hand-dyers claim that they wash their fabrics several times after dying, this experience has taught me that this may not be so. I know that colors in the red family are notorious bleeders, but when I purchase fabric, then set the dye myself and then still have horrible bleeding, I'm thinking maybe someone took an ill-advised shortcut. For the record, I have never had a problem with Ricky's hand-dyes nor with Cherrywood Fabrics.
(3) Rather than stress about a quilting issue, I am going straight to this forum, where I always get prompt and good advice based on other members' experiences.