POLARIS: 3000% human/update_icons() improvement

Using overlays in lists and a mutable_appearance

code/modules/organs/blood.dm

@@ -93,11 +93,11 @@ var/const/CE_STABLE_THRESHOLD = 0.5
 		if(blood_volume >= BLOOD_VOLUME_SAFE)
 			if(pale)
 				pale = 0
-				update_body()
+				update_icons_body()
 		else if(blood_volume >= BLOOD_VOLUME_OKAY)
 			if(!pale)
 				pale = 1
-				update_body()
+				update_icons_body()
 				var/word = pick("dizzy","woosey","faint")
 				src << "<font color='red'>You feel [word]</font>"
 			if(prob(1))
@@ -108,7 +108,7 @@ var/const/CE_STABLE_THRESHOLD = 0.5
 		else if(blood_volume >= BLOOD_VOLUME_BAD)
 			if(!pale)
 				pale = 1
-				update_body()
+				update_icons_body()
 			eye_blurry = max(eye_blurry,6)
 			if(getOxyLoss() < 50 * threshold_coef)
 				adjustOxyLoss(10 * dmg_coef)
@@ -126,7 +126,7 @@ var/const/CE_STABLE_THRESHOLD = 0.5
 		else //Not enough blood to survive (usually)
 			if(!pale)
 				pale = 1
-				update_body()
+				update_icons_body()
 			eye_blurry = max(eye_blurry,6)
 			Paralyse(3)
 			adjustToxLoss(3 * dmg_coef)

code/modules/organs/organ_external.dm

@@ -675,7 +675,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 		if (!(status & ORGAN_DEAD))
 			status |= ORGAN_DEAD
 			owner << "<span class='notice'>You can't feel your [name] anymore...</span>"
-			owner.update_body(1)
+			owner.update_icons_body()
 			for (var/obj/item/organ/external/child in children)
 				child.germ_level += 110 //Burst of infection from a parent organ becoming necrotic
 
@@ -1112,11 +1112,11 @@ Note that amputating the affected organ does in fact remove the infection from t
 	if(src.robotic >= ORGAN_ROBOT)
 		return
 	src.status |= ORGAN_MUTATED
-	if(owner) owner.update_body()
+	if(owner) owner.update_icons_body()
 
 /obj/item/organ/external/proc/unmutate()
 	src.status &= ~ORGAN_MUTATED
-	if(owner) owner.update_body()
+	if(owner) owner.update_icons_body()
 
 /obj/item/organ/external/proc/get_damage()	//returns total damage
 	return (brute_dam+burn_dam)	//could use max_damage?
@@ -1203,7 +1203,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 			qdel(spark_system)
 		qdel(src)
 
-	victim.update_body()
+	victim.update_icons_body()
 
 /obj/item/organ/external/proc/disfigure(var/type = "brute")
 	if (disfigured)