If you like the look and feel of Android OS but prefer to stick with Windows, freeware Android  Skin Pack will make Windows look like Android OS.

Android  Skin Pack is a transformation pack, developed by Hamed Danger, that convert your Windows PC into Android like OS by installing some App icon packs, Andriod boot screen and much more. For a better idea, you can below screen-shots.

Applying the customization is very easy as Android Skin Pack is just an installer and requires no patching software to make the theme work. That said, it’s worth noting that theme packs are often a little difficult to uninstall so you may want to make a backup before you give this a shot.

Download Android Skin Pack offline installer for Windows 7. { X86>> [link]/ X64>> [link] }

HOW TO INSTALL ANDROID SKIN PACK ON WINDOWS PC:

1. Download the Android Skin Pack from above link based on the version of OS installed on your machine.
2. Run the Installer, you will be presented with a screen having various options like UXTheme patch, files and/or any extra items. Click on install after making a choice from them.
3. Once the installation is completed, you will be asked to reboot your computer. Do so, by clicking finish.
4. After your system is rebooted you will get a completely new and shiny look of Android OS.

Now you have your newly decorated Windows PC with Android interface ready to use.

Note: For safety purpose you can create restore point in your windows 7 before installing this theme. If something goes wrong you can restore from that restore point.