This is variant of Desert (yes, I am bored).
The difference between Desert.tar.gz and Desert2.tar.gz is that the Geekos in Desert2 looks not 2 but 2.25 (if not 3!1eleven) dimensional ;-)
Desert2.tar.gz contains four files:
1. Desert2.png, the wallpaper (1024*768) without Geeko
2. Desert2Rainbow.png, the wallpaper (1024*768) with Geeko in rainbow-style
3. Desert2Gold.png, the wallpaper (1024*768) with Geeko in dirty yellow (read Gold)
4. Desert2.svg, the Inkscape .svg file containing both Geekos in case you want to alter something.