A newborn Teacup Yorkie puppy is born black with tan points on the muzzle, above the eyes, around the legs and feet and toes, the inside of the ears, and the underside of the tail. Occasionally Teacup Yorkies are born with a white star on the chest or on one or more toes. These markings fade with age, and are usually gone within a few months. A white star on the chest is generally an indication that the teacup puppy will be a good coat grower in quantity, but not necessarily quality.
It may take up to three years or more for the Yorkie coat to reach its final color. P. H. Combs, writing in 1891, complained about show wins awarded to puppies, when the dogs coat does not fully come in until three or four years old, and the honor of winning such a prize for a puppy can therefore be of but little practical benefit to the owner since the adult teacup Yorkie dogs color cannot be exactly predicted.