Login Screen Wallpaper Location?

[Wavechaser]

I absolutely love the super clean look of the new login screen wallpaper, does anyone know where it is stored in the OS? I'd love to use it for my main wallpaper.

 

[HelveticaNeue]

I believe it is the same as the Mission Control background. Which can be found in Macintosh HD>System>Library>Core Services>Dock>Resources called default desktop.png. However, it is only 256x256 so you would need to tile it into whatever desktop size you need.

 

[pavelbure]

http://d.pr/VCpO

 

[HelveticaNeue]

Here it is complete with Apple logo. I just print-screened really quick while logging in and content-aware filled over my avatar and such.