R.M.
Maybe a color-safe bleach? Also, you could try to throw about a cup of Shout into the load to see if that helps at all? These are just suggestions, but I have not tried them myself...let us know if anything helped...k?
After responding, I found this website....it may have some solutions for you.
http://www.wikihow.com/Remove-Coloring-Washed-in-to-Clothes