Shikharev released Basic visual style for windows 8.
This is a really nice looking and simple!
You need to copy Basic theme in C:\Windows\Resources\Themes
For using this theme first you need to Patch Uxtheme.
Its recommended to use:
Ribbon Disabler for Win8
Tiny Windows Borders for Win8
WinaeroGlass for Win8
Aero with Blur for Win8
Start Menu for Win8