Booted up to test the dev MATE, when the desktop loads the Sabayon wallpaper is not the default wallpaper, some green stripped wallpaper is. The Sabayon wallpapers aren't even in the default selection of wallpapers in the Appearance Preferances, one has to click add to see the Sabayon wallpapers.
Not sure if this is the desired behavior, but I think the Sabayon wallpaper should at least be the default paper one sees when the desktop loads. As far as the Appearance Prefrences selection of wallpapers, no biggie, but it would be nice to have the sabayon wallpapers show up there. -- KJS ~wolfden~