How to Change Login Screen in OS X Yosemite?

2015-06-06 OS X

In OS X Yosemite your login screen is usually made from your currently set wallpaper mixed with a Blur effect.

This version of OS X gives you easy way to change this picture to something completely different. All you need to do is to prepare the image you want to use and save it as a PNG file in

/Library/Caches/com.apple.desktop.admin.png

Now simply log out to see the effect immediately.

Pretty easy stuff!