Comment 1 for bug 1247608

Unfortunately, this is the new look-and-feel is the new Gnome look-and-feel. Unity is just the window manager: we have no control over upstream applications that appear on your desktop, and contributors to the Gnome project are particularly uncooperative when it comes to working with Ubuntu downstream. This is a sad and unfortunate situation.

That said, we have plans to adjust the thematic presentation of many or most of these applications over the coming cycle. I'll keep this bug as a tracking bug for this work. Also , see [1].

[1] https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1130722