It was a crisp and sparkling fall morning in London, and within the Black Chapel designed by artist Theaster Gates for the Serpentine Gallery in Hyde Park, a show was underway.
Art world luminaries such as Michael Craig-Martin, Eva Rothschild, Rana Begum and Hans Ulricht Obrist surveyed striking sculptural ensembles in shades of amethyst, coral, aquamarine and chartreuse. But the event wasn’t part of Frieze London, the recent glitzy and…