SIEMON SCAMELL-KATZ is an artist who looks—as Eva Figes writes of Claude Monet adrift among his water lilies in the blue-gray hour before dawn in her 1983 novel Light—“at, not through. The bright skin of things, the shimmering envelope.” Scamell-Katz’s exquisitely colored abstract paintings on aluminum are a bit like that shimmering pond in Giverny: At first, they are subtly reflective, sensuous. They change dramatically with the angle of one’s gaze, their proximity to a window, the time of day, the weather.Their content is determined by the landscape from which they are drawn. His palette comes