gnome style error after upgrading to natty from maverick

[i-freaker]

After upgrading to natty, I found that the gnome style changed. Most controls changed from flat style to 3d style. And this annoys me a lot.

http://postimage.org/image/1z07zapes/
http://postimage.org/image/1z07zapes/

It should be like the right dialog in the photos, but most application changed to the style of the left dialog.