Funny, I've never had an all white rat until recently. Don't know the official color names but I've always had:
Black
Black hooded
Blue
Blue hooded
Tan
Tan hooded
Brown (agouti?)
brown hooded
siamese (seal point?)
And only recently a few whites popped up.
Thing I've always liked about having the different colors is with a little care when placing females with males, I can always keep their breeding record tags with them as I move them around.
Mice on the other hand, I only have Black, White and Brown. Many years ago I had all kinds of colors but stopped breeding mice for a while.
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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC and still very fiesty)
0.2 kids (CBB, a big part of our selective breeding program)
LOL, to many snakes to list, last count:
24.36 BRB
19.19 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 

