Kennel Club Breed Standard:
Colours:
Brindles: must be striped, ground colour from lightest buff to deepest orange, stripes always black, eyes and nails preferably dark, dark shadings on head and ears acceptable.
Fawns: colour varies from lightest buff to deepest orange, dark shadings on head and ears acceptable, eyes and nails preferably dark.
Blues: colour varies from light grey to deep slate, the nose and eyes may be blue.
Blacks:
a) Black is black.
In all above colours white is only permissible on chest and feet, but it is not desirable even there. Nose always black, except in blues and harlequins. Eyes and nails preferably dark.
b) Mantle: Black and white with a solid, black blanket extending over the body. Ideally - black skull with white muzzle, white blaze optional, whole white collar preferred, a white chest, white on part or whole of the forelegs and hindlegs, white tipped black tail. Nose always black, eyes and nails preferably dark
Harlequins: pure white underground with preferably all black patches or all blue patches, having appearance of being torn. Light nails permissible. In harlequins, wall eyes, pink noses, or butterfly noses permissible but not desirable.