Limbs now copy hair data from their owner and may have optional body hair icons blended into them.

code/modules/mob/living/carbon/human/appearance.dm

@@ -95,6 +95,8 @@
 	g_hair = green
 	b_hair = blue
 
+	force_update_limbs()
+	update_body()
 	update_hair()
 	return 1
 

code/modules/mob/living/carbon/human/update_icons.dm

@@ -271,8 +271,13 @@ var/global/list/damage_icon_parts = list()
 			icon_key += "[part.species.race_key]"
 			icon_key += "[part.dna.GetUIState(DNA_UI_GENDER)]"
 			icon_key += "[part.dna.GetUIValue(DNA_UI_SKIN_TONE)]"
-			if(part.s_col)
+			if(part.s_col && part.s_col.len >= 3)
 				icon_key += "[rgb(part.s_col[1],part.s_col[2],part.s_col[3])]"
+			if(part.body_hair && part.h_col && part.h_col.len >= 3)
+				icon_key += "[rgb(part.h_col[1],part.h_col[2],part.h_col[3])]"
+			else
+				icon_key += "#000000"
+
 	icon_key = "[icon_key][husk ? 1 : 0][fat ? 1 : 0][hulk ? 1 : 0][skeleton ? 1 : 0]"
 
 	var/icon/base_icon

code/modules/nano/modules/human_appearance.dm

@@ -152,6 +152,8 @@
 	generate_data()
 
 /datum/nano_module/appearance_changer/proc/generate_data()
+	if(!owner)
+		return
 	if(!valid_species.len)
 		valid_species = owner.generate_valid_species(check_whitelist, whitelist, blacklist)
 	if(!valid_hairstyles.len || !valid_facial_hairstyles.len)

code/modules/organs/organ_external.dm

@@ -35,6 +35,7 @@
 	var/cannot_break
 	var/s_tone
 	var/list/s_col
+	var/list/h_col
 	var/list/wounds = list()
 	var/number_wounds = 0 // cache the number of wounds, which is NOT wounds.len!
 	var/perma_injury = 0
@@ -55,6 +56,7 @@
 	var/dislocated = 0    // If you target a joint, you can dislocate the limb, causing temporary damage to the organ.
 	var/can_grasp //It would be more appropriate if these two were named "affects_grasp" and "affects_stand" at this point
 	var/can_stand
+	var/body_hair
 
 /obj/item/organ/external/Destroy()
 	if(parent && parent.children)
@@ -258,7 +260,7 @@
 				createwound(BURN, min(burn,can_inflict))
 				//How much burn damage is left to inflict
 				spillover += max(0, burn - can_inflict)
-		
+
 		//If there are still hurties to dispense
 		if (spillover)
 			owner.shock_stage += spillover * config.organ_damage_spillover_multiplier
@@ -275,7 +277,7 @@
 			//2. If the damage amount dealt exceeds the disintegrate threshold, the organ is completely obliterated.
 			//3. If the organ has already reached or would be put over it's max damage amount (currently redundant),
 			//   and the brute damage dealt exceeds the tearoff threshold, the organ is torn off.
-			
+
 			//Check edge eligibility
 			var/edge_eligible = 0
 			if(edge)

code/modules/organs/organ_icon.dm

@@ -15,6 +15,7 @@ var/global/list/limb_icon_cache = list()
 /obj/item/organ/external/proc/sync_colour_to_human(var/mob/living/carbon/human/human)
 	s_tone = null
 	s_col = null
+	h_col = null
 	if(status & ORGAN_ROBOT)
 		return
 	if(species && human.species && species.name != human.species.name)
@@ -23,16 +24,19 @@ var/global/list/limb_icon_cache = list()
 		s_tone = human.s_tone
 	if(human.species.appearance_flags & HAS_SKIN_COLOR)
 		s_col = list(human.r_skin, human.g_skin, human.b_skin)
+	h_col = list(human.r_hair, human.g_hair, human.b_hair)
 
 /obj/item/organ/external/proc/sync_colour_to_dna()
 	s_tone = null
 	s_col = null
+	h_col = null
 	if(status & ORGAN_ROBOT)
 		return
 	if(!isnull(dna.GetUIValue(DNA_UI_SKIN_TONE)) && (species.appearance_flags & HAS_SKIN_TONE))
 		s_tone = dna.GetUIValue(DNA_UI_SKIN_TONE)
 	if(species.appearance_flags & HAS_SKIN_COLOR)
 		s_col = list(dna.GetUIValue(DNA_UI_SKIN_R), dna.GetUIValue(DNA_UI_SKIN_G), dna.GetUIValue(DNA_UI_SKIN_B))
+	h_col = list(dna.GetUIValue(DNA_UI_HAIR_R),dna.GetUIValue(DNA_UI_HAIR_G),dna.GetUIValue(DNA_UI_HAIR_B))
 
 /obj/item/organ/external/head/sync_colour_to_human(var/mob/living/carbon/human/human)
 	..()
@@ -77,8 +81,8 @@ var/global/list/limb_icon_cache = list()
 		var/datum/sprite_accessory/hair_style = hair_styles_list[owner.h_style]
 		if(hair_style && (species.get_bodytype() in hair_style.species_allowed))
 			var/icon/hair_s = new/icon("icon" = hair_style.icon, "icon_state" = "[hair_style.icon_state]_s")
-			if(hair_style.do_colouration)
+			if(hair_style.do_colouration && islist(h_col) && h_col.len >= 3)
-				hair_s.Blend(rgb(owner.r_hair, owner.g_hair, owner.b_hair), ICON_ADD)
+				hair_s.Blend(rgb(h_col[1], h_col[2], h_col[3]), ICON_ADD)
 			overlays |= hair_s
 
 	return mob_icon
@@ -121,6 +125,14 @@ var/global/list/limb_icon_cache = list()
 				else if(s_col && s_col.len >= 3)
 					mob_icon.Blend(rgb(s_col[1], s_col[2], s_col[3]), ICON_ADD)
 
+			if(body_hair && islist(h_col) && h_col.len >= 3)
+				var/cache_key = "[body_hair]-[icon_name]-[h_col[1]][h_col[2]][h_col[3]]"
+				if(!limb_icon_cache[cache_key])
+					var/icon/I = icon(species.icobase, "[icon_name]_[body_hair]")
+					I.Blend(rgb(h_col[1],h_col[2],h_col[3]), ICON_ADD)
+					limb_icon_cache[cache_key] = I
+				mob_icon.Blend(limb_icon_cache[cache_key], ICON_OVERLAY)
+
 	dir = EAST
 	icon = mob_icon