Incisor too thin for a white crown, metallic rear one recommended by dentist.?

Well, I fractured the last tooth on the upper left side of my mouth. The dentist told me that I needed to get a metal crown too. He said gold actually. I ended up with white gold, but the front of it was white. The reason for this he explained was this..... the further back your teeth are from the front, the shorter they get. When you get a crown, they shave your tooth down. But, since it was the last tooth, and already short, they didn't want to shave away my whole tooth. Using a metal crown would allow them not to shave as much of my tooth away, but is still strong enough for the tooth to do its job. The front is white, so that when you smile, you wont see this gold tooth. But, you can't see my last tooth when I smile anyway. But, maybe it does show for some people. Hope this helps.