|Introducing the "Hope" for Gnome ;-)...|
But as for a change, would you like to use a really beautiful looking theme for GTK called the "Hope-GTK". It is based on the Ambiance theme, and looks really good to me. If interested, then go to this deviantart download link.
Once downloaded, extract the zip file which should give you a "tar.gz" file. Simply drag it and drop on the "Appearance" window. Enjoy!.