But not in Canada where the breed originated at:
The traditional colour is black. A sunburned black is permissible. White markings on chest, toes and/or tip of tail are permissible. Markings of any colour other than white are most objectionable and the dog is to be disqualified. The Landseer Newfoundland is white with black markings, and is of historical significance to the breed. The preferred pattern of markings for the Landseer is black head with white blaze extending onto the muzzle, black saddle and black rump and upper tail. All remaining parts are to be white with a minimum of ticking.