null = n_color, no.

code/game/objects/structures/mirror.dm

@@ -228,10 +228,11 @@
 			if(new_eye_color)
 				var/n_color = sanitize_hexcolor(new_eye_color)
 				var/obj/item/organ/eyes/eyes = H.getorganslot(ORGAN_SLOT_EYES)
-				eyes?.eye_color = n_color
+				if(eyes)
+					eyes.eye_color = n_color
 				H.eye_color = n_color
 				H.dna.update_ui_block(DNA_EYE_COLOR_BLOCK)
-				H.update_body()
+				H.dna.species.handle_body()
 	if(choice)
 		curse(user)