Yorkies come in all looks, shapes, sizes & colors! Yes, there is a standard to go by but if you are happy with your little guy and don't care about that - it shouldn't matter! I'm sure he will be a great pet. Honestly, he doesn't have as much hair as most Yorkies at 8 weeks and he looks possibly Chihuahua mix but who knows! Some Yorkies don't have as much hair and then it turns beautiful! Here's some pics of Chi/Yorkie mixes:
Chorkie Pictures and Photos, 1
Either way, he is a CUTIE!!!