XDA Developers offers free skins for Resco Pocket Radio, the popular streaming radio client for Windows Mobile Professional.

Installation of skins is simple: download to your PC, extract the archived skin to DeviceProgram FilesResco Pocket RadioSkinsDefault VGA (for VGA devices) or DeviceProgram FilesResco Pocket RadioSkinsDefault WVGA (for WVGA devices) and replace (overwrite) the file “main.png” found at destination.

You can find some nice VGA and WVGA skins here and some WVGA only skins here.