A wallpaper I made with inkscape which I think suites the current branding. If you want to look at the svg you should use inkscape or inkview. Web browsers often renders filters wrong!
The Ubuntu logo is a trademark owned by Canonical.
I got the idea of the background from another deviant I can't find right now. If you recognize this and know where I got the idea from, please tell me and I'll give creds to that person.