The Background is somewhat of a replacement for the vanilla panorama, it can be a static image or a slideshow.
You can also set the background property to "options" ("background" : "options") to make it the vanilla options background (dirt). This will also work with my other mod Custom Backgrounds.
- image : The location of the background image
- mode : (optional) This can be "fill","stretch","center" or "tile". See Background Modes for more information.
- slideshow : (optional) see slideshow