A few weeks ago Media Center Themer was released and yesterday it was released in the Media Center app store (MadeForMediaCenter.com)

If haven’t had chance to check out the addin it’s a theming tool for Windows Media Center that enables changing of colours, fonts, images and strips basically re-theme the whole of Media Center without permanently changing any files in Media Center.

The app is free from MadeforMediaCenter.com 

Media Center Themer is the one and only tool you need to entirely customize Media Center, whether you just want to change the background picture or you want to completely reorganize and re-theme the whole interface. All the information you need about the software and the way it works is available in the help file that’s installed with the rest of the package.