i haven't done this yet but check out jim noel's post ( #29 )
25mins soaked in the coffee nothing but the coffee ( no vit c, no soda ) ..
so ... if you make a pot of instant coffee, and don't add any of the other ingredients, it will process your color film too.
jsut bracket your film, and have about 1/2 to burn ... it might work for your color in b/w xperiment.
have fun !