bleeding of red fabric

Did you pre-wash the reds? I have a bottle of Retayne, on the directions it says "For best results, treat fabric with Retaye before washing it for the first time or placing it into your quilt". Estimate amount of water needed to cover cotton fabric. Fill machine to this level with HOT water 140 degrees. Add 1 teaspoon per yard add dry fabric. Set machine for 20 min. Use cool water to rinse and dry at once.
Subsequent launderings should be with cool water.
If you didn't pre-wash, or do any of the above, try the sample of scraps mentioned above.
I'd wash it on cold water, low dry, and hope for the best. If you use hot water at this point, it will be sure to bleed, and you don't want that.
Let us all know.
Sara in Fla.