OMG. While looking for an answer to your problem, I found
this!
Basically, you can set an outfit to only "fit" one skintone! This means I could set my Warlokk conversions so only Angelita and Lucia could wear them!
< dances around the room to the confusion of the mother and the husband >
No, I didn't find the answer to your problem yet...
Nope, still haven't found anything... will keep looking off and on. Poke me once in a while...