This is a GTK3 port of Sonar used by default in openSUSE.
The theme comes with the metacity theme and the GTK2 version. License and authors are in the theme directory. Note that the metacity theme and GTK2 theme are not my work, just distributed via GPL.
Wallpaper: Terraform-green (part of the official GNOME backgrounds).
Icon Theme: Sonar(openSUSE).
Extract the version of the theme you want, i.e Sonar-3.2.zip and then exact to ~/.themes and use the GNOME Tweak Tool to switch theme and titlebar. To switch the theme manually, you will have to use the dconf-editor in GNOME 3.
Compatibility: GNOME 3.0/3.2
Update - 22nd October 2011
Added GNOME 3.2 compatible version.
Update - 25th October 2011
- Improved tabs.
- Added dark border on menus.
- Lighter selection.
- Don't use dark Adwaita theme for image viewer.
Update - 2nd November 2011
- Fixed rubberband selection looking solid white in the filemanager.
- Added DnD.lines.