Welcome! Many of them are born black and a deep brown/gold color. As some get older, their color changes. My yorkie started black and deep borwn/gold and he now has lots of silver at only 8 months of age!
Good luck with your search. Note...they are high maintenance dogs. I must admit! They require more attention (in my opinion) and don't do well left alone for too long. They like to be around people all of the time.
The positives...they are great kissers
, love to cuddle, are hyper as heck and do the funniest things!