I painted this last night in a workshop with Sandy Dennison. The central idea was to use black - the forbidden color. Conventional wisdom is to never use black paint - its considered too harsh, too stark. Sandy's point is that it often enlivens a painting and makes the lighter values really pop. This is 11x14", for sale.
I think I will take the advice to heart. I like the effect you can get and I'm ready to break some rules!