Solving several issues.

code/game/machinery/doors/door.dm

@@ -18,7 +18,7 @@
 
 	var/secondsElectrified = 0
 	var/shockedby
-	var/visible = TRUE
+	var/visible = TRUE // To explain: Wheter the door can block line of sight when closed or not.
 	var/operating = FALSE
 	var/glass = FALSE
 	var/welded = FALSE

code/game/machinery/doors/windowdoor.dm

@@ -54,6 +54,15 @@
 	else
 		icon_state = "[src.base_state]open"
 
+/obj/machinery/door/window/update_atom_colour()
+	if((color && (color_hex2num(color) < 255)))
+		visible = TRUE
+		if(density)
+			set_opacity(TRUE)
+	else
+		visible = FALSE
+	set_opacity(density && visible)
+
 /obj/machinery/door/window/proc/open_and_close()
 	open()
 	if(src.check_access(null))
@@ -143,16 +152,18 @@
 	do_animate("opening")
 	playsound(src.loc, 'sound/machines/windowdoor.ogg', 100, 1)
 	src.icon_state ="[src.base_state]open"
-	sleep(10)
+	addtimer(CALLBACK(src, .proc/finish_opening), 10)
+	return TRUE
 
+/obj/machinery/door/window/proc/finish_opening()
+	operating = FALSE
 	density = FALSE
-//	src.sd_set_opacity(0)	//TODO: why is this here? Opaque windoors? ~Carn
+	if(visible)
+		set_opacity(FALSE)
 	air_update_turf(1)
 	update_freelook_sight()
-
 	if(operating == 1) //emag again
 		operating = FALSE
-	return 1
 
 /obj/machinery/door/window/close(forced=0)
 	if (src.operating)
@@ -171,10 +182,13 @@
 	density = TRUE
 	air_update_turf(1)
 	update_freelook_sight()
-	sleep(10)
+	addtimer(CALLBACK(.proc/finish_closing), 10)
+	return TRUE
 
+/obj/machinery/door/window/proc/finish_closing()
+	if(visible)
+		set_opacity(TRUE)
 	operating = FALSE
-	return 1
 
 /obj/machinery/door/window/play_attack_sound(damage_amount, damage_type = BRUTE, damage_flag = 0)
 	switch(damage_type)

code/game/objects/items/crayons.dm

@@ -737,12 +737,7 @@
 				to_chat(usr, "<span class='warning'>A color that dark on an object like this? Surely not...</span>")
 				return FALSE
 
-
-			if(istype(target, /obj/structure/window))
-				var/obj/structure/window/W = target
-				W.spraycan_paint(paint_color)
-			else
-				target.add_atom_colour(paint_color, WASHABLE_COLOUR_PRIORITY)
+			target.add_atom_colour(paint_color, WASHABLE_COLOUR_PRIORITY)
 
 		. = use_charges(user, 2)
 		var/fraction = min(1, . / reagents.maximum_volume)

code/game/objects/items/devices/radio/headset.dm

@@ -258,6 +258,9 @@ GLOBAL_LIST_INIT(channel_tokens, list(
 	name = "\proper mini Integrated Subspace Transceiver "
 	subspace_transmission = FALSE
 
+/obj/item/radio/headset/silicon/pai/ComponentInitialize()
+	. = ..()
+	AddElement(/datum/element/empprotection, EMP_PROTECT_WIRES)
 
 /obj/item/radio/headset/silicon/ai
 	name = "\proper Integrated Subspace Transceiver "

code/game/objects/structures/window.dm

@@ -271,29 +271,27 @@ GLOBAL_LIST_EMPTY(electrochromatic_window_lookup)
 	air_update_turf(TRUE)
 	update_nearby_icons()
 
-/obj/structure/window/proc/spraycan_paint(paint_color)
-	if(color_hex2num(paint_color) < 255)
-		set_opacity(255)
-	else
-		set_opacity(initial(opacity))
-	add_atom_colour(paint_color, WASHABLE_COLOUR_PRIORITY)
-
 /obj/structure/window/proc/electrochromatic_dim()
 	if(electrochromatic_status == ELECTROCHROMATIC_DIMMED)
 		return
 	electrochromatic_status = ELECTROCHROMATIC_DIMMED
-	animate(src, color = "#222222", time = 2)
-	set_opacity(TRUE)
+	var/current = color
+	add_atom_colour("#222222", FIXED_COLOUR_PRIORITY)
+	var/newcolor = color
+	if(color != current)
+		color = current
+		animate(src, color = newcolor, time = 2)
 
 /obj/structure/window/proc/electrochromatic_off()
 	if(electrochromatic_status == ELECTROCHROMATIC_OFF)
 		return
 	electrochromatic_status = ELECTROCHROMATIC_OFF
 	var/current = color
-	update_atom_colour()
+	remove_atom_colour(FIXED_COLOUR_PRIORITY, "#222222")
 	var/newcolor = color
-	color = current
-	animate(src, color = newcolor, time = 2)
+	if(color != current)
+		color = current
+		animate(src, color = newcolor, time = 2)
 
 /obj/structure/window/proc/remove_electrochromatic()
 	electrochromatic_off()
@@ -348,11 +346,9 @@ GLOBAL_LIST_EMPTY(electrochromatic_window_lookup)
 	GLOB.electrochromatic_window_lookup[electrochromatic_id] |= src
 
 /obj/structure/window/update_atom_colour()
-	if((electrochromatic_status != ELECTROCHROMATIC_OFF) && (electrochromatic_status != ELECTROCHROMATIC_DIMMED))
-		return FALSE
 	. = ..()
-	if(color && (color_hex2num(color) < 255))
-		set_opacity(255)
+	if(electrochromatic_status == ELECTROCHROMATIC_DIMMED || (color && (color_hex2num(color) < 255)))
+		set_opacity(TRUE)
 	else
 		set_opacity(FALSE)