How does the coat coloring typically transition for the purebred Yorkshire Terrier as it matures?

Starting out dark and transitioning to blue and tan.

The development of the Yorkshire Terrier's signature coat color is a distinct characteristic of that purebred lineage. When Yorkshire Terrier puppies are born, their coats typically present with a much darker coloration. As the Yorkie matures over time, this initial dark coat undergoes a noticeable and recognized change in pigmentation. The mature, desired coloring settles into a pattern characterized by blue and tan markings. This specific transformation from a dark puppy coat to the established blue and tan adult pattern is an important marker of the breed's heritage, influencing the potential color palette seen in the resulting Yorkie-Chon offspring depending on which parent's genetics are dominant.