Blacked out sims

Just an update, I fixed it. Apparently it’s tattoos? For some reason my sims randomly turned black halfway through playing, yet when I went into CAS and removed their tattoos they turned back to normal? But now I need to find all the original tattoos they had from the gallery, so not the best.

I’ve been having this same problem on PlayStation. 

How did you remove gallery tattoos? this has happened to my sims too and I don't know how to fix it!!! :(

(edit her colour comes back in paint mode and I can’t see any tattoos left, but when I leave paint mode she’s back to being blacked out)

Remove all tattoos, and hopefully it will remove the gallery added ones too.