I almost forgot I submitted a theme of iGoogle for BonstioNet a few months ago, and it was chosen the second (third? I don’t remember) prize in their design cometition.
You can download the theme to use it by first installing “Custom iGoogle Skins” at BonstioNet. After installing it, see “custom skins” in your iGoogle and check out the cool skins it has. Mine’s called “simple black” as you see in the image. Click it if you like it and you’ll see your iGoogle always in that theme.