[ubuntu-art] Ubuntu 9.10 artwork

[Chris Tooley]

Hello all,

Is there a specific site that lists all the official Ubuntu artwork
the Ubuntu artwork team has put into Karmic? I found this site here:
https://wiki.ubuntu.com/Artwork/Official but more specifically, I'm
looking for the background to this:
http://1.bp.blogspot.com/_FJH0hYZmVtc/S0HK2oILuBI/AAAAAAAAFNY/F7wtt9LyZOQ/s1600-h/uboot.png
and the above wiki doesn't have it.

A high quality version would be best, gimp .xcf is preferable.  Can
someone steer me in the right direction?

Basically, I want to try my hand at making a BURG theme, and I need to
start with the background :)

Thank you,
~Chris