I've hacked together a theme. Basically, I just put Noia 2.0 eXtreme's tabs and scrollbars onto the default theme. I've gone through a few iterations, and am pretty happy with the decision not to style the tab bar, but just the tabs.
What I don't have is any artistic talent myself. For now, the icon for this theme is simply a cropped piece of a selected tab. The preview is a screen shot of the theme. Both of these could use some work to fit with what most themes do. Anybody want to help?