So I painted up this thing tonight, based on some tweaks Geoff suggested. I used cerulean blue, burnt sienna and white, for a warm/cool effect. I thought it was interesting the mixture of the two had a green tinge - wouldn't violet be more towards the mark?
Anyway, this is gessoed butcher paper, about 10 x 18 or so. I have five more for other studies. So far, I'm digging where this is going.