How do I know?

[ptah]

I've recently downloaded several custom sims all of them with their specific skintones and eye colors. I tend to modify all sims before adding them to my neighborhood and try different things. I soon discovered that some skintones and eye colours were either too similar or look weird when used in other sims, and choose to erase some of them, but I was wondering if there is a tool that tells me which ones are active in my sims characters so i can erase any unused ones.

[MissDoh]

Unfortunately such a tool does not exist.