This painting by Callum Innes began as a monochrome, with dense layers of black oil paint covering the middle section of a primed white canvas. What appears as a soft veil of color is actually the remains of a carefully unpainted block of canvas. Taking a turpentine-soaked brush, the artist allowed the solvent to run down the surface of one painted section, leaving a ghostly trail of paint and exposing the support underneath. Innes’s exposed paintings, a series he has explored since the early 1990s, take their specific titles from the color of paint used in their creation. These familiar...