hi
The color will be almost impossible to predict. I have a pair of furbabies. Our boy just never changed color since he was 10 weeks old. He's black as midnight and more of a gold than tan. We kept waiting for him to change color but it never happened. He weighs almost 5 pounds now (3 years old) and looks just like a puppy! Our girl on the other hand, came from 1 black/gold and 1 blue/tan for parents, and she started changing to blue and gold after about 6 months, she has a beautiful coat, but she's over 1 year old now and her coat is still changing! In fact, she's going completely almost completely blond! We're shocked, and very excited to see her final coloring
Even though it's not a customary coloring we think it's gorgeous.
So I wouldn't worry, whatever color your puppy ends up, I'm sure it will be beautiful.