What I mean is best illustrated by these images from around the web:
...as you can see, the home button stands out because its reflection doesn't match the glass. On the white models, you can't see the difference (because they're white).
I also think the black ring doesn't show up as much; I would have preferred if it was the same silvery-grey colour as the edges (because from those shots it looks like the ring is almost black)
However, I've got to point out that I'm basing this opinion on shots like these I've found around the web. Like I said, I'm still waiting for my one, so we'll see what it's like in person.
I see what you're saying but I think it looks linda neat.