Ubuntu Guide posted a tutorial about installing Elementary Gtk 2.1 theme(Murrine Engine& Nautilus Elementary) in Ubuntu
DanRabbit has released Elementary Gtk Theme 2.1 version on 3/5/11 with following new features. Here is how to install Elementary gtk 2.1 in Ubuntu include required Murrine Engine and highly recommended Nautilus Elementary.Install Elementary Gtk 2.1 theme(Murrine Engine& Nautilus Elementary) in Ubuntu
New Features:
+ dropped Aurora engine
+ new xfwm4 theme
+ works with GTK 3
+ misc bug fixes
+ dark by default