Windows 8 would ditch the Windows 7 Aero interface in favor of Metro UI,  which exists on Windows Phone today. If you love the MEtro style tiles and interface, you can get the Metro UI on windows 7 using Zetro UI.

Zetro UI is very simple to install and configure. Extract the zip after downloading the theme from the link below. When done, follow the below two simple steps:

Opening the Extras folder, running the Theme Patcher, and clicking on all three “patch” buttons contained within.
Opening the Theme folder and copying both of the files inside it to C:\Windows\Resources\Themes.

When finished, Open the Control Panel and “Change the Theme” under Appearance and Personalization. The Zetro theme should be available in “Installed themes”.

metro-ui-windows7
The look and feel of the theme makes you windows 7 look simple with white all over the place, which might look a bit odd for the first few minutes. You can tweak it using the extra tweaks available in the readme file that comes along with the zip.

Extending the tweak further, feel free to blend it with something like the Metro-inspired Omnimo 4 theme for Rainmeter.

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