All rats are either Agouti (A)-[ banded hairs], or Black (a) - [solid hairs] based. I've listed colors in three sections. Agouti [banded hairs] , Black [solid hairs] , and Shaded. Agouti based colors:  Agouti (A-)    Fawn (A- rr)    Amber (A- pp)    Cinnamon (A- mm)    Havana Agouti (A- mm Rr)    Aussie Cinnamon    Cinnamon Pearl (A- mm Pepe)    Blue Agouti (A- gg)    Platinum Agouti (A- gg mm rr) or (A- gg mm pp)    Blue Fawn (A- gg rr)    Russian Blue Agouti (A- dd)    Dove Agouti (A- dd mm)  [also known as Russian Cinnamon]    Chinchilla (    Lynx (A- bb dd)  [also known as Lilac Agouti]    American Lynx (   Black based colors:  Black (aa)    Beige (aa rr)    Champagne (aa pp)    Mink (aa mm)    Havana (aa mm Rr)    Lilac (aa mm li)    Pearl (aa mm Pepe)    Blue (aa gg)  [also known as Slate Blue]    Sky Blue (aa gg) lighter than Blue but still has Black eyes    Powder Blue (aa gg with modifier) very pale Blue with Ruby or Black eyes    Platinum (aa gg rr) or (aa gg mm)    Silver (aa gg pp)    Blue Beige (aa dd rr)    Russian Blue (aa dd)    Russian Silver (aa dd gg)  [also known as Double Blue]    Dove (aa dd mm)    Chocolate (aa bb)    Cocoa (aa bb Rr)    Albino (cc)       Shaded:  Siamese [a/a ch/ch] can also be Blue point (aa gg c(h)c(h) ) or Russian Point (aa dd c(h)c(h) ) etc    Himalayan [a/a c/ch] or [A- c/ch]      Agouti Burmese [A- ch/ch Bu/bu]    Sable Agouti Burmese [A- ch/ch Bu/Bu]    Burmese [a/a ch/ch Bu/bu]    Sable Burmese [a/a ch/ch Bu/Bu]    Pearl Merle [a/a Pe/pe Me-