Get a Minimal Windows 7 Desktop with Glass Onion Theme
Glass Onion is an eye-catching Minimal Windows 7 theme created by deviantArt user SolMiler which comes in three different styles:Dusk, Dawn and Noon. It inherits the glassy look of original Windows 7 user interface and adds smoothness and simplicity to it.
It includes a set of simple yet beautiful icon set for Windows task bar(supports top, bottom and left taskbar) and also a gorgeous clock widget.
Download this minimal theme and you can find the full installation guide in the PDF file included.