I was not a fan of the Apple Linen Login screen and decided to dig around to see what was needed to replace it with something more suited for my tastes. This is my new login screen and logo.

Apple OS X Lion Login Screen Replacement. New background and Logo. Wallpaper by Thomas Sychra http://www.zpecter.net/
How to Replace the Apple Logo
First, you will need a new transparent .PNG File. I created a VMware Logo from an existing corporate file, captured, removed the background, and saved as a transparent .PNG file.
There are two logos and they differ a little depending on the background. I created a White VMware Logo and saved it for both images.
Rename the old images to .old and then drop in the new images with the same old names of apple.png and appleLinen.png. Be sure they are in a .PNG file format. A benefit is that .PNG allows for transparency.
Path:
/System/Library/PrivateFrameworks/LoginUIKit.framework/Versions/A/Framework s/LoginUICore.framework/Versions/A/Resources
File:
appleLinen.png
apple.png
How to replace the login page background
These are System files and will require administrative rights to replace or rename.
They are stored at the following directory path
Path:
/System/Library/Frameworks/AppKit.framework/Versions/C/Resources/
File:
NSTexturedFullScreenBackgroundColor.png
The background is also a .PNG image (1280×800 @ 72dpi for my 13″ Macbook)
Rename the old image to .old to keep the original and then drop in your replacement image. Images smaller than your screen resolution will automatically tile.
Ideas:
- Add a wall paper that has your contact information in the event you ever lose your laptop or if it is stolen.
If you use this technique or you find this helpful, drop me a note at chris@grossmeier.com or leave a comment below!