Robert Irwin is an American artist from Los Angeles whose work deals with perception. Cacophonous, a show of recent light pieces at the Pace Gallery in New York City. Starting from the ready-made cool white fluorescent tube 6' or 8' in length, Irwin layers coloured gels—sometimes up to a dozen overlays—to manipulate, reflect, darken, or fully obscure the bulb's output. A visit to the show affords the opportunity to reflect generally on Irwin's use of colour throughout his career, and to dig deep into the rich chromatic experience of these works.