I love the yorkies who hold their puppy color. My now passed Ozzie kept a lot of his black, with only a slight bit of steel underneath. His head, like Mateses's little one, was a red/golden color.
My current pup, Gus, is two and a half now. His head and face are more tan than his puppy black markings, but his back is still solid black. He is a cotton coat, and when trimmed into a puppy cut, he looks like a baby. Unfortunately, he needs to be watched like a baby too...he is a real scamp, and constantly on the prowl for trouble!