I don't like white or black backgrounds, though I prefer white to black in a typical windowed environment. If my editor has the full screen it doesn't matter, but I don't like menus and other windows being a lot brighter than the editor. It's either distracting, or it's a jarring readjustment every time I have to change windows.
If it weren't for syntax highlighting, I'd prefer slight color variations, with not much preference towards dark-on-light or light-on-dark. If I have a lighter background I usually prefer the text to be black. If I have a darker background I usually prefer the text to be slightly colored. In web terms, an example would be "99DD99" text on "303030" background, or "99DD99" background with black text.
If it weren't for syntax highlighting, I'd prefer slight color variations, with not much preference towards dark-on-light or light-on-dark. If I have a lighter background I usually prefer the text to be black. If I have a darker background I usually prefer the text to be slightly colored. In web terms, an example would be "99DD99" text on "303030" background, or "99DD99" background with black text.