From the AKC standard :
Puppies are born black and tan and are normally darker in body color, showing an intermingling of black hair in the tan until they are matured. Color of hair on body and richness of tan on head and legs are of prime importance in adult dogs, to which the following color requirements apply: Blue: Is a dark steel-blue, not a silver-blue and not mingled with fawn, bronzy or black hairs. Tan: All tan hair is darker at the roots than in the middle, shading to still lighter tan at the tips. There should be no sooty or black hair intermingled with any of the tan.
Any solid color or combination of colors other than blue and tan as described above. Any white markings other than a small white spot on the forechest that does not exceed 1 inch at its longest dimension.
Approved July 10, 2007
Answered by LeeMcT - 12/8/2012 3:11:06 PM