For anyone else having this issue, editing the bgsm apparently doesn't work, why I don't know, but I managed to just make a CBBE folder and put the textures in there and drum roll please....no more purple!!
I've tried installing different skins for my female ghouls and nothing seems to fix it. It was working literally an hour ago, and all I had installed before that was the CBBE support for the Chinese Stealth Suit..