I've been trying to do more with colours, and it has been fun solving problems along the way that I have never seen before. This one is from this morning, with the reference from Earthsworld instagram page. With this I got stuck on the light-side of the face; I know that there is probably a precise colour I need to put there that one may tell me—if you do, my thanks, but I would appreciate it if anyone could explain how I can discern the faint-shades of red/orange/brown/bright yellow on the light-hitting side of the face. (And yeah, the proportions are a mess on the same side as well, which might add on to the problem.)