Do you recall any other birth "marks" like white socks or something? It can well be possible that he has a party gene on him, but the "silver hair" on top of his head alone is not an indicator of anything at all... a lot of yorkies do have a silver top head at athe beggining then it turns to gold usually... or tan but not often an intense tan with the cinnamon hint to it.... well... hard to say , guess you still do not have an answer huh...
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