Another point about bleeding...the quilt usually only bleeds when the fabric is wet, so when you are washing a quilt, or rinsing it, get it out of the washer immediately and get it dry. I usually do put mine in a dryer on a low setting and check it about every 10 minutes. When the quilt is about 80% dry, i remove it from the dryer. If there are any "questionable" fabrics, that I suspect are unstable, then I take my hair dryer and make sure every part surrounding that fabric (including the backing of the quilt) are completely dry.
I know there are some that will say putting a quilt in a dryer is a no-no, but my experience has led me down a different path. drying in the dryer gives me good results and air drying has led to problems with bleeding.