About 2 months ago I bought 2 blaze rats from different sources, one with the standard blaze and one that had a possum face (I'm assuming both are controlled by the same gene, correct me if I'm wrong). They had one litter, and then the father died for unknown reasons, without any symptoms except for lethargy the morning he died. It wasn't until he died that I considered he and/or the female may have the dominant blaze.

She had a small litter, with only 2 surviving (all pups had blazes, no megacolon deaths). They turned 4 weeks old on the 8th. Unfortunately, the mother died yesterday from what I think was a miscarriage or pyrometra, so I can't do a test breeding to see if she has the recessive blaze. The pups are growing pretty well but their fur looks a little thin, which I read can be a symptom of megacolon. I use GEM white shavings and they're fed Native Earth 4018. I also sprinkle diatomaceous earth on their bedding. Here's a shot of the female;


Could it just be a molt? Is there any way to visually distinguish between the dominant and recessive blazes?


And I have a couple rats that I'd like some help with regarding their colors. I've looked at many different sites but haven't been able to figure out what this guy is, I'm thinking beige or champagne? His eyes are really dark, I was sure they were black before I snapped the shots;




The other blaze is in this one too, you can see the thinning fur on his face;


I have what I believe are 2 blue girls, though I'm not sure on the agouti one. Is this girl an American blue?


And here's the agouti girl, the photos make her look a lot more browned out than she is in person;



Thanks in advance for any help.