All the Baby Icons are black skinned

I have exactly the same thing: no matter what colour the parents are, the baby will be its original colour in the bassinet but will show as black (seemingly only one skin tone) in the UI and the family tree. It started pretty much when I downloaded the 'Paranormal' pack - I've never had the problem before then. It happened when I had no mods, so I don't think mods affect it. I thought, well, if it's going to do that, then I might as well start downloading mods for the first time! It also happens with mods. It affects all babies, whatever colour (even if they're blue, green or red). It's very annoying because I do have a lot of black representation in my game (over 50%) but all the babies show as black and it's confusing when they're supposed to be green.