My favorite Cape Ann painter, Jeff Weaver of Gloucester, gave a demonstration at the Rockport Art Association last summer. One of the things he explained really well was the use of two major contrasting colors, warmer and cooler, and letting one dominate. Here’s an exercise in that, and in catching low winter sun. I liked when he said, “You can break every rule. All that matters is how it looks.” That consoles me when I realize how few of the rules I even know.