Comment 1 for bug 593632

Hmm...

This seems to be theme-dependent. When I use a theme like Radiance, for example, this works as expected:

1) Background: None - looks like my Gtk theme
2) Background: Solid color - looks like the color I choose, even if transparent
3) Background: Image - looks like the image, even if transparent

But when I try Clearlooks, items (2) and (3) above look like (1).