What is a CHOCOLATE coat?
Chocolate colours can stay rich and dark, or fade. They should always remain a chocolate color ranging from a milk chocolate to dark chocolate shade. True chocolates are born almost black in colour and maintain the rich dark color throughout their lifetime.
All dogs with a "bb" pair and at least one "E" will be Brown:
bbEe and bbEE are brown dogs (with brown pigment):
bbEe is brown carrying recessive cream
bbEE is a brown dog
Shades of those basic colours are modified by other genes.