I am a new yorkie owner and I'm enjoying it, but I'm a little curious. He is nine weeks old and still has alot of black and some gold on him. There's a little white on his chest but it doesn't seem that the black is turning silver yet. Is this normal? Don't get me wrong, he's adorable, I just thought that they start turning some silver at a certain age. Maybe it's just me being paranoid, but any comments would help.