Dobermans come in 4 colors.
the lighter colors are a double recessive so a little rarer.  A common misconception is they have more skin issues. we've not found this true in our lines the past 40 years.  good quality nutrition and health care would seem to have a factor in coat and over all condition.

Isabella - commonly called fawn

Blue = shades can vary

Red and rust one of the 2 predominate colors

Black and rust = one of the 2 predominate colors

                        Cavalier king Charles spaniels have 4 basic colors also. 

Tri color - black and white with tan points

Black and tan ( black with rust points )

Blenheim - red and white (parti color)

Ruby - gorgeous red gold all over