shes just rocking her dark colors, there are plenty of babies that look like that (not trying to burst your bubble or anything, but..)
the last one turned into this
and them being dark doesn't just mean they are cold, considering they mostly sleep with their bright colors/white bellys on when its coldest in their tank(night time), it can mean anything, stress, hungry, not happy about something, or just for no reason. there are some beardies who rock them 24/7, and babies are especially known to keep their heavy stress marks on their belly until they are 4-6+months old. everything is all big and scary to them, they don't want to look like a nice treat.
that other beardy though, right in front of yours, thats a pretty one, looks healthy/happy for being in such crappy conditions.