The case of the serial stylist... -_-

Well... I have a small issue that has apparently been an issue before. My child sim's hair keeps changing color. I even went so far as to remove all mods and it still happens. I bring him into CAS and he's normal, but when I go to live mode his hair changes. Once it was blonde, then red, ect. His hairstyle remains the same though. It happens when he goes to bed, takes a bath, swims.... only my child sim seems affected so far. None of the posts that mention this have a fix other than -last patch fixed it- which means it broke again. Any mods or fixes out there to help with this?