I've been working at home all week and wanted a clean simple theme. The Win8 Consumer Preview was a nice fit. I disabled transparency, selected the gray color, and combined it with the standard Windows 7 wallpaper in gray to match it. Below is a link where to get it. Very nice. Enjoy.
You can get the Win8 Consumer Preview Theme below:
http://fediafedia.deviantart.com/art/Windows-8-Consumer-Preview-for-Win7-289207270