"By examining how the Cosmos slide-show works, I figured out how to create my own custom slide-show backgrounds. Read on and find out to create your own custom desktop background.
Creating a Custom XML File for Your Backgrounds
"Gnome uses an XML file to contain the configuration information necessary to run the backgrounds as a slide-show. The "Cosmos" XML file can be found at /usr/share/backgrounds/cosmos/background-1.xml and contains all of the information that Gnome requires.
"Here is what it looks like:"