Mantle (in some countries referred to as Bostons due to the similar coloration and pattern as a Boston Terrier): The colour is black and white with a solid black blanket extending over the body; black skull with white muzzle; white blaze is optional; whole white collar preferred; a white chest; white on part or whole of forelegs and hind legs; white tipped black tail. A small white marking in the black blanket is acceptable, as is a break in the white collar. Blue: The colour is a pure steel blue. White markings at the chest and feet permitted. Never with fawn nuance or blackish blue colour.
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