Change the desktop picture at login

Just a simple tip, and I didn’t realize until reading around. To change the background at login:

1. Go to Library>Desktop Pictures.
2. Just move the image you wish would show at log-in.
3. Back up the original ‘Aqua Blue.jpg’.
3. Rename it Aqua Blue.jpg. (Make sure you back up the original just in case you want it back).

Now, log out to see your changes.