Darkness handling update

code/modules/mob/dead/observer/observer.dm

@@ -666,14 +666,32 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 	set desc = "Toggles your ability to see things only ghosts can see, like other ghosts"
 	set category = "Ghost"
 	ghostvision = !(ghostvision)
-	updateghostsight()
+	update_sight()
 	to_chat(usr, "You [(ghostvision?"now":"no longer")] have ghost vision.")
 
 /mob/dead/observer/verb/toggle_darkness()
 	set name = "Toggle Darkness"
 	set category = "Ghost"
-	seedarkness = !(seedarkness)
-	updateghostsight()
+	switch(lighting_alpha)
+		if (LIGHTING_PLANE_ALPHA_VISIBLE)
+			lighting_alpha = LIGHTING_PLANE_ALPHA_MOSTLY_VISIBLE
+		if (LIGHTING_PLANE_ALPHA_MOSTLY_VISIBLE)
+			lighting_alpha = LIGHTING_PLANE_ALPHA_MOSTLY_INVISIBLE
+		if (LIGHTING_PLANE_ALPHA_MOSTLY_INVISIBLE)
+			lighting_alpha = LIGHTING_PLANE_ALPHA_INVISIBLE
+		else
+			lighting_alpha = LIGHTING_PLANE_ALPHA_VISIBLE
+
+	update_sight()
+
+/mob/dead/observer/update_sight()
+	if (!ghostvision)
+		see_invisible = SEE_INVISIBLE_LIVING
+	else
+		see_invisible = SEE_INVISIBLE_OBSERVER
+
+	updateghostimages()
+	..()
 
 /mob/dead/observer/proc/updateghostsight()
 	if(!seedarkness)
@@ -681,7 +699,8 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 	else
 		see_invisible = SEE_INVISIBLE_OBSERVER
 		if(!ghostvision)
-			see_invisible = SEE_INVISIBLE_LIVING;
+			see_invisible = SEE_INVISIBLE_LIVING
+
 	updateghostimages()
 
 /proc/updateallghostimages()