Fixes #3131

code/game/mecha/equipment/tools/tools.dm

@@ -1053,4 +1053,16 @@
 			set_ready_state(0)
 			chassis.use_power(energy_drain)
 			do_after_cooldown()
-		return 1
+		return 1
+
+/obj/item/weapon/paintkit //Please don't use this for anything, it's a base type for custom mech paintjobs.
+	name = "mecha customisation kit"
+	desc = "A generic kit containing all the needed tools and parts to turn a mech into another mech."
+	icon = 'custom_items.dmi'
+	icon_state = "royce_kit"
+
+	var/new_name = "mech"    //What is the variant called?
+	var/new_desc = "A mech." //How is the new mech described?
+	var/new_icon = "ripley"  //What base icon will the new mech use?
+	var/removable = null     //Can the kit be removed?
+	var/list/allowed_types = list() //Types of mech that the kit will work on.

code/game/mecha/mecha.dm

@@ -759,6 +759,34 @@
 		user.visible_message("[user] attaches [W] to [src].", "You attach [W] to [src]")
 		return
 
+	else if(istype(W, /obj/item/weapon/paintkit))
+
+		if(occupant)
+			user << "You can't customize a mech while someone is piloting it - that would be unsafe!"
+			return
+
+		var/obj/item/weapon/paintkit/P = W
+		var/found = null
+
+		for(var/type in P.allowed_types)
+			if(type==src.initial_icon)
+				found = 1
+				break
+
+		if(!found)
+			user << "That kit isn't meant for use on this class of exosuit."
+			return
+
+		user.visible_message("[user] opens [P] and spends some quality time customising [src].")
+
+		src.name = P.new_name
+		src.desc = P.new_desc
+		src.initial_icon = P.new_icon
+		src.reset_icon()
+
+		user.drop_item()
+		del(P)
+
 	else
 		call((proc_res["dynattackby"]||src), "dynattackby")(W,user)
 /*

code/game/mecha/working/ripley.dm

@@ -2,6 +2,7 @@
 	desc = "Autonomous Power Loader Unit. The workhorse of the exosuit world."
 	name = "APLU \"Ripley\""
 	icon_state = "ripley"
+	initial_icon = "ripley"
 	step_in = 6
 	max_temperature = 20000
 	health = 200
@@ -19,6 +20,7 @@
 	desc = "Standart APLU chassis was refitted with additional thermal protection and cistern."
 	name = "APLU \"Firefighter\""
 	icon_state = "firefighter"
+	initial_icon = "firefighter"
 	max_temperature = 65000
 	health = 250
 	lights_power = 8
@@ -107,18 +109,4 @@
 			T.Entered(A)
 		step_rand(A)
 	..()
-	return
-
-
-/obj/mecha/working/ripley/attackby(obj/item/weapon/W as obj, mob/user as mob)
-	if(istype(W, /obj/item/weapon/fluff/sven_fjeltson_1))//this shit broke ripleys
-		src.icon_state = "earth"
-		src.initial_icon = "earth"
-		src.name = "APLU \"Strike the Earth!\""
-		src.desc = "Looks like an over worked, under maintained Ripley with some horrific damage."
-		user << "You pick up your old \"Strike the Earth!\" APLU."
-		user.drop_item()
-		del(W)
-		return
-	else
-		..()
+	return

code/modules/customitems/item_defines.dm

@@ -1,4 +1,3 @@
-hi
 // Add custom items you give to people here, and put their icons in custom_items.dmi
 // Remember to change 'icon = 'custom_items.dmi'' for items not using /obj/item/fluff as a base
 // Clothing item_state doesn't use custom_items.dmi. Just add them to the normal clothing files.
@@ -359,19 +358,29 @@ hi
 
 ////// Ripley customisation kit - Butchery Royce - MayeDay
 
-/obj/item/weapon/fluff/butcher_royce_1
+/obj/item/weapon/paintkit/fluff/butcher_royce_1
 	name = "Ripley customisation kit"
 	desc = "A kit containing all the needed tools and parts to turn an APLU Ripley into a Titan's Fist worker mech."
 	icon = 'custom_items.dmi'
 	icon_state = "royce_kit"
 
+	new_name = "APLU \"Titan's Fist\""
+	new_desc = "This ordinary mining Ripley has been customized to look like a unit of the Titans Fist."
+	new_icon = "titan"
+	allowed_types = list("ripley","firefighter")
+
 ////// Ripley customisation kit - Sven Fjeltson - Mordeth221
 
-/obj/item/weapon/fluff/sven_fjeltson_1
-  name = "Mercenary APLU kit"
-  desc = "A kit containing all the needed tools and parts to turn an APLU Ripley into an old Mercenaries APLU."
-  icon = 'custom_items.dmi'
-  icon_state = "sven_kit"
+/obj/item/weapon/paintkit/fluff/sven_fjeltson_1
+	name = "Mercenary APLU kit"
+	desc = "A kit containing all the needed tools and parts to turn an APLU Ripley into an old Mercenaries APLU."
+	icon = 'custom_items.dmi'
+	icon_state = "sven_kit"
+
+	new_name = "APLU \"Strike the Earth!\""
+	new_desc = "Looks like an over worked, under maintained Ripley with some horrific damage."
+	new_icon = "earth"
+	allowed_types = list("ripley","firefighter")
 
 //////////////////////////////////
 //////////// Clothing ////////////