Easily configure the GDM, ‘login manager’ to the rest of us, with ‘Change GDM GUI’ – a simple script for changing various aspects of the login interface.
The script allows you to change the wallpaper, the GTK theme and various other options (as can seen in the screenshot beneath).

Download

  • Download the .zip file @ this link
  • When finished right click on the archive and choose ‘Extract here’
  • Double-click on the ‘cgdm_en.sh’, choosing ‘Run’ when prompted.

Thanks to Antonio