Adds (fake) ambient occlusion as a client preference

code/game/area/areas.dm

@@ -7,6 +7,7 @@
 	icon = 'icons/turf/areas.dmi'
 	icon_state = "unknown"
 	layer = AREA_LAYER
+	plane = BLACKNESS_PLANE //Keeping this on the default plane, GAME_PLANE, will make area overlays fail to render on FLOOR_PLANE.
 	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
 	invisibility = INVISIBILITY_LIGHTING
 
@@ -518,4 +519,4 @@ GLOBAL_LIST_EMPTY(teleportlocs)
 
 // A hook so areas can modify the incoming args
 /area/proc/PlaceOnTopReact(list/new_baseturfs, turf/fake_turf_type, flags)
-	return flags
+	return flags