Change Background Grub Loader (Ubuntu Oneric Ocelot)

Assalamualaikum...
Now, i'll show you steps to change your grub loader background. You can use your own image. Check this out :
1. First, open terminal console.
2. Be a super user.
3. Than edit file : gedit /etc/grub.d/05_debian_theme
4. Find the source of your grub loader background image. For example with my own directory :

5. Change this with your image directory.
6. After that, save your configuration.
7. Reboot your PC to take effect.
See you next post... ;)

Wassalam...