Here are two really nice screenshots of how the new Limewire beta 4.1.5 looks on the Gnome desktop:
http://www.limewire.org/LimeWire-GTK-bluecurve.png
and one with the Aqua X theme:
http://www.limewire.org/LimeWire-GTK.png
If you want your Limewire to look this way, download the latest beta and and the latest Java from Sun (it is also beta, but is very stable).
Enjoy!