Caffenol - C + Fuji Xtra 400 = Bad

Caffenol - c + Fujifilm Xtra400 is bad recipe, I just test a roll of it and just ended on the garbage bin. I dont know which film would be best suited for caffenol-c but im still working on it specially the colored film.
I can only say that homebrewed color developer was kind of hard to make...lets hope someone have successfully made one and posted it on interenet.