40 x 30
I could add a lot of different colours as long as I kept the overall value the same in the shadow and kept consistent temperatures: cool in the shadow; warm in the light. I know there is red in the "cool" shadow and the highlight on the boys neck has a hint of cool blue mixed with the peachy tint, but temperature, like colour is relative. The overall impression of the shadow side is of a cool influence and the sunlit areas read warm (this is partially due to psychology: we think of the sun as warm and yellowish and so we bring that notion to a painting of sunlight.)
By keeping the face cool, the intensely-warm, backlit ear could be made to sing in comparison. The child's ear had a sweetness to it which, along with the pensive pose, attracted me enough to take the picture in the first place.
Like every painting, this one was 1/4 part inspiration and 3/4 parts rational, problem solving.