Decided to install Vista on the VM yesterday and made a bit of a mix from Vista Windows 7 and Windows 8 plus added a new reworked start menu and explorer frames, turned out pretty nice I think.
Included in the theme are all the original Vista Wallpapers and the original Start orb that you can apply using Start Is Back.
Other Programs you will need:
Start Is Back (by Tihiy) Brings back the Start Menu [link]
Free 30 Day Trial, $3 for 2 licenses
Aero Glass for Windows 8 RC3 (by Big Muscle) [link]
I made a Aero Glass for windows 8 all in one installer for your convenience you can download here [link]
Bottom Details Pane For Windows 8 [link]
Ribbon Disabler for Windows 8 (From Sergey @ WinAero) [link]
UxStyle for Windows 8 (Very Important to do this first) Must be used to be able to have custom themes [link]
Download from Mediafire here: [link]
Updated to fix missing taskbar image when small icons used and centered text on window title
Update 13/05/2013: New style with no rounded corners on any of the buttons or boxes, Download from Mediafire [link]
To have the details pane on the bottom [link]