[Aegis]

I just did some research and there is actually another post on Hamster Central about this, so yes acrylic water based paint is safe around hamsters. Apparantly, just make sure that it is definately water-based, which is important according to some other helpful websites. It's also good that you are supervising Poptart while doing this, and definately watch her in case she tries to start chewing on the paint. Good luck with your project!
-Aegis