My test for fabric bleeding is to take snips of the colors being tested and soak them in boiling water. I take a piece of white muslin and put in on a ceramic plate. Fish out the colored fabric and arrange it on one half of the muslin. Fold the other half over the snips and add enough water to make it all wet, but not swimming. Wait a day until it is dry. Pull the top back and remove the snips. If the muslin is still pristine, you are safe. Faint coloring in the shape of your snips is a bad sign!