http://www.kinook.com/Forum/showthre...?threadid=2267
If the web page itself doesn't define a background color, the default for Internet Explorer is to use the color configured in Windows (the Window color as defined in Windows Control Panel under Display -> Appearance -> Advanced on XP/Vista and Display -> Appearance on Windows 2000 -> Advanced). This can also be overriden in IE at Tools | Internet Options | Colors.