Your local quilt shop probably sells Synthropol. You can use it to remove the extra color. I have to tell you that I made a queen sized quilt from a Star Designs kit which used hand dyed fabrics. I thought to wash the completed quilt before giving it to my daughter. I used Retayne and the dark red fabric bled onto the two tone gold border making it pink. I washed the quilt 3 more times, 2 times with Synthropol (using a tiny amout per bottle directions)and once more with Retayne and added a dye catcher to the last wash. The color was still there. I was sick so I called Star Designs and they had me send them the quilt. They washed several more times using 1/2 cup Synthropol each time and managed to remove the extra color but not effect the overall color of the quilt. I will try to post a photo of the quilt after this treatment.