Black dogs can carry a recessive genes for silver or blue, and the pup can fade to silver, or will be born with a bluish tint to the coat and have blue-grey colored pigment. Black dogs that carry the silver gene, usually begin turning silver at 7 weeks of age.
All dogs with at least one “B” and at least one “E” will be Black:
BBEe, BBEE, BbEe, and BbEE are black dogs (with black pigment):
BBEe is black carrying recessive cream
BBEE is a black dog
BbEe is black carrying recessive cream and recessive brown
BbEE is black carrying recessive brown
The gene affecting silvering (V/v) will fade black to blue or silver