if the core is black or any anodized color say bye bye to the color and if there is a laser etch it will stay there but will be really hard to see and it wont discolor the urethane at all
doesnt bleach weaken stuff? i know if you bleach clothes it kinda destroys the threads. idk if i would try it on metal cores the first time.maybe dye a pro mod wheel and then bleach it?