Looking for Windows Mobile themes? Then PortableThemes has you covered! They have nearly 1900 backgrounds, and most impressive of all, you can create a customized theme to match that background - all in your browser. The themes will work on everything from Pocket PC 2000 up to Windows Mobile 6, and you can select things like the base colour, the home screen text colour, and other theme attributes. I've never seen anything quite like this! Definitely worth checking out.