So one thing that caught my attention is that one of the artist said add allitle bit of cooler tone on thin skin like the skin under the eyes and the under arm. and add warm color on places more exposed on blood like cheek and knees. is there any scientific reason behind this? is it because blood is purplish so its slightly cooler? i understand the more blood part on the areas more blood concetrating but not the cooler color thing. or is there a temperature map on the human skin? if there is can you link me to one?