Apple announced OS X Mountain Lion and is available for download for developers.OS X Mountain Lion is expected to arrive in Summer with some awesome features.
OS X Mountain has an amazing background and Windows 7 users can download OS X Mountain wallpaper pack as desktop background.It is not a transformation pack and you will be required to install manually.The pack contains visual style and theme pack.
Recommended Reading: Transform Windows 7 to Mac OS X Lion
If you want to get OS X Mountain wallpaper as your desktop for Windows 7 then you can install it from the link given below.
Download OS X Mountain Lion Theme for Windows 7