i bought a polyester shower curtain?

Posted under black futon

i bought a polyester shower curtain its black red and white i washed it today for the first time but i washed it with my black futon cover which is like a stretch material so i figured it wouldnt bleed well anyways now my shower curtain the white on it is got a dark tint to it and theres a couple spots that are black tag says dont bleach so is there anything i could try to get it back to normal i didnt dry it
i just bought some oxyclean….didnt work!

all fabric bleach or oxyclean