Adds colorable cowboy hats and minor clothing fixes

Adds two styles of colorable cowboy hat to loadout
Adds clear gas mask sprite for unathi to cover their full face
Fixes sash accessories to be properly colorable

code/modules/client/preference_setup/loadout/loadout_head.dm

@@ -107,11 +107,28 @@
 
 /datum/gear/head/cowboy/New()
 	..()
-	var/list/hats = list()
-	for(var/hat in typesof(/obj/item/clothing/head/cowboy_hat))
-		var/obj/item/clothing/head/hat_type = hat
-		hats[initial(hat_type.name)] = hat_type
-	gear_tweaks += new/datum/gear_tweak/path(sortAssoc(hats))
+	var/list/hats = list(
+	"cowboy hat" = /obj/item/clothing/head/cowboy_hat,
+	"cowboy hat, black" = /obj/item/clothing/head/cowboy_hat/black,
+	"cowboy hat, wide" = /obj/item/clothing/head/cowboy_hat/wide,
+	"cowboy hat, small" = /obj/item/clothing/head/cowboy_hat/small,
+	)
+	gear_tweaks += new/datum/gear_tweak/path(hats)
+
+/datum/gear/head/cowboy_colorable
+	display_name = "cowboy hat (colorable)"
+
+	description = "Draw. In any color of the rainbow."
+	path = /obj/item/clothing/head/cowboy_hat/white
+
+/datum/gear/head/cowboy_colorable/New()
+	..()
+	var/list/whitehats = list(
+	"cowboy hat" = /obj/item/clothing/head/cowboy_hat/white,
+	"cowboy hat, wide" = /obj/item/clothing/head/cowboy_hat/white_wide,
+	)
+	gear_tweaks += new/datum/gear_tweak/path(whitehats)
+	gear_tweaks += gear_tweak_free_color_choice
 
 /datum/gear/head/fedora
 	display_name = "fedora, brown"

code/modules/clothing/head/misc.dm

@@ -226,6 +226,14 @@
 	desc = "Because justice isn't going to dispense itself."
 	icon_state = "cowboy_wide"
 
+/obj/item/clothing/head/cowboy_hat/white
+	icon_state = "cowboy_white"
+
+/obj/item/clothing/head/cowboy_hat/white_wide
+	name = "wide-brimmed cowboy hat"
+	desc = "Because justice isn't going to dispense itself."
+	icon_state = "cowboy_white_wide"
+
 /obj/item/clothing/head/cowboy_hat/small
 	name = "small cowboy hat"
 	desc = "For the tiniest of cowboys."