‘Borderless’ themes are all the rage currently.
The Elementary-Borderless GTK+ theme we featured a few days back has been particularly popular with users so it was somewhat inevitable that the stock Ubuntu themes would get the same treatment sooner rather than later.
There is a trade off in using borderless themes as they lack the ability to be resized windows from the edges/lower-right corner – unless you’re running a patched version of GTK+ that has a ‘resize grip’ embedded in the lower corner.
Annoyingly this is an ‘Emerald’ theme rather than a Metacity one so you will need to be running Emerald as your ‘window’ decorator in order to use it.
Download @ Gnome-Look