Change Gnome Splash Screen

So you just changed your entire Gnome theme, your Ubuntu installation is finally that great shade of blue you really love, you customized your login screen to use transparent png's and it just sparkles and... After you login the gnome splash screen is still Ubuntu brown!

Don't worry! It can be fixed... and tested! Just create an image (jpg or png) and copy it to /usr/share/pixmaps/splash/. Now launch a terminal window and type gconf-editor. This will launch the Gnome Configuration Editor.

Navigate to apps >> gnome-session >> options and change the splash_image to your image name. That's it!

Now to test it without logging out. First install Xnest: sudo apt-get install xnest. Now go to a terminal window and type gdmflexiserver --xnest.

This will launch another login session inside a window, so you don't have to keep logging in and out to test your new splash screen!