Just for the future, When washing fabrics that you think will run, soak a corner of each fabric first in a bowl of hot, hot, hot water. Some fabric will surprise you and not bleed dye into the water, so wash but don't teat that fabric. Fabric that bleeds - wash with treatment. fabrics that bleed a lot - treat separately or don't use.
This is exactly why I always test my fabrics before any mishaps can happen. We all put so much effort into creating our quilts so taking care to insure the best results is a simple thing.
peace