Adorable rats!As some one who was into the pet rat breeding fancy, I can tell you the actual terms for your cuties! The oranges are fawns, the 'high whites' appear to be veriberks, and that brown girl is agouti. Ghost is interesting to me because she looks like a rat I had and couldn't figure out the coloring for. She is either pearl or platinum, I believe. I am completely jealous of your American blues (the blues you have), I only have Russian blues and Am. blues are harder to find in my area. The blue that you mentioned that is somewhere between blue and brown is likely mink. Mink comes in many shades, and some come with a very blue-ish tone that is easy to mistake for blue. Which is why I steer clear of them xD Feeders or pets, I try to keep my blues pure because I have been tricked before by some very convincing minks xD