Complex sentence: The colour is solid dark chocolate with white permitted on the chest, paws, and down the top of the muzzle, or dark brown roan, with large patches of solid brown, especially on the head, ears, back, and base of the tail.
Split into simpler sentences: The colour is solid dark chocolate with white permitted on the chest, paws, and down the top of the muzzle. Or dark brown roan, with large patches of solid brown, especially on the head, ears, back, and base of the tail.