spray paint update

code/modules/power/lighting.dm

@@ -323,6 +323,8 @@
 		var/BR = brightness
 		var/PO = bulb_power
 		var/CO = bulb_colour
+		if(color)
+			CO = color
 		var/area/A = get_area(src)
 		if (A && A.fire)
 			CO = bulb_emergency_colour
@@ -360,6 +362,9 @@
 		else
 			removeStaticPower(static_power_used, STATIC_LIGHT)
 
+/obj/machinery/light/update_atom_colour()
+	. = ..()
+	update()
 
 /obj/machinery/light/process()
 	if (!cell)