> Tell me which one you prefer! Or if you want to submit another background, to check what it would look like.

Alex, E., 
good job and thanks for your contribution.

My preference is for the darker tone (tdeui3.png), but I am also fine if we end up using the lighter one. IMO, the darker one reinforces the concept that TDE is now a project on its own, no longer a mainteined KDE 3.5.x.
Would it be possible to modify the "gear" symbol on the top right corner? It looks a little like we are still in 1995. Maybe we can find a better design or better symbol for it.

Thanks again and keep it up!
Cheers
  Michele