Show us a pic if you can with the color of the back showing and some of the bleached spots. Someone can come up with a clever solution. You could try using some diluted dye to touch it up if the spots aren't too big. You might use some paint pens and create some sort of design ontop of the spots. If you have extra fabric of the backing you might write meaningful words on that and place those to cover the spots and applique them down. Good Luck.

Brenda in Alabama