He's very cute and I can see he is very fond of you as well. Yorkies coat usually start changing around the age of 5 months. I doubt your puppy will stay the color he is now. I'm only guessing though. You will just have to wait and see if his color becomes lighter. There is no way to know what is really a genetic question. Yorkichon = Jobi. That's really cute. Welcome to YT.