What name are you using for the old Sims 3 site/exchange? I was trying to find your studio to take a look and came up empty. If by "blacked out" you mean the sim looked black, that is probably a missing skin issue. The pink is most likely the same thing, although I haven't personally seen pink. If that's not what you meant, the rest of this won't be relevant.
The point at which I did see the issue (a black sim) was when I downloaded one and obviously didn't have the right skin in my game (and it was a very long time ago, when I wasn't as careful about checking what I was downloading). I don't really know what it means if it shows up that way on your exchange upload, which is what I think you meant, but it sounds as though it would still be related to a missing skin file somewhere. Your dcbackup file contains info on things to be included with uploads, which would include things like custom patterns and cc, so possibly if your dcbackup has been emptied that could be the problem. I did expect, though, that the sim would default to a regular game skin in that case.
