* 04_add_theme_selection.patch => 04_new_appearance_settings.patch: (background screen) - rename and add unity officials option to it. Note that those only appears if you are in an unity session. It impacts both unity-2d and unity-3d. unity-3d settings are taken if the options are different on first launch. All options for the settings aren't exposed. If the user specify something else in ccsm for instance, it will be preserved. (LP: #869080) - also add a "restore defauts" on the background screen to reset the user selection change to default.