Streamline marker beacons on maps

- A new map only subtype of burgundy marker beacons has been added.
- This new subtype is used for the marker beacons on IceBox, which were
  intended to be red, but were actually picking random colours.
- Landing markers on Kilostation are now burgundy marker beacons with
  different names, rather than anchored marker beacon stacks.

code/modules/mining/equipment/marker_beacons.dm

@@ -25,7 +25,7 @@ GLOBAL_LIST_INIT(marker_beacon_colors, sortList(list(
 	novariants = TRUE
 	cost = 1
 	source = /datum/robot_energy_storage/beacon
-	var/picked_color = "random"
+	var/picked_color = "Random"
 
 /obj/item/stack/marker_beacon/ten //miners start with 10 of these
 	amount = 10
@@ -79,12 +79,14 @@ GLOBAL_LIST_INIT(marker_beacon_colors, sortList(list(
 	anchored = TRUE
 	light_range = 2
 	light_power = 3
+	var/icon_prefix = "marker"
 	var/remove_speed = 15
 	var/picked_color
 
 /obj/structure/marker_beacon/Initialize(mapload, set_color)
 	. = ..()
-	picked_color = set_color
+	if(set_color)
+		picked_color = set_color
 	update_icon()
 
 /obj/structure/marker_beacon/deconstruct(disassembled = TRUE)
@@ -101,7 +103,7 @@ GLOBAL_LIST_INIT(marker_beacon_colors, sortList(list(
 /obj/structure/marker_beacon/update_icon()
 	while(!picked_color || !GLOB.marker_beacon_colors[picked_color])
 		picked_color = pick(GLOB.marker_beacon_colors)
-	icon_state = "[initial(icon_state)][lowertext(picked_color)]-on"
+	icon_state = "[icon_prefix][lowertext(picked_color)]-on"
 	set_light(light_range, light_power, GLOB.marker_beacon_colors[picked_color])
 
 /obj/structure/marker_beacon/attack_hand(mob/living/user)
@@ -146,3 +148,11 @@ GLOBAL_LIST_INIT(marker_beacon_colors, sortList(list(
 	if(input_color)
 		picked_color = input_color
 		update_icon()
+
+
+/* Preset marker beacon types, for mapping */
+
+/obj/structure/marker_beacon/burgundy
+	picked_color = "Burgundy"
+	// set icon_state to make it clear for mappers
+	icon_state = "markerburgundy-on"