Today ZeuSosX released Glass Mac OSX visual style for windows 8.
This is a really nice looking and have aero glass effect!
You need to copy Glass Mac OSX theme in C:\Windows\Resources\Themes
For using this theme first you need to Patch Uxtheme.
Its recommended to use:
Ribbon Disabler for Windows 8
Tiny Windows Borders for Windows 8
WinaeroGlass for Windows 8
Aero with Blur for Windows 8