Standing before Untitled (Rainbow Painting, 2018–2021, 2020.09)—a bruisy but bright multicolored abstraction created last year by Caitlin Lonegan and the sole painting in her exhibition “4 pm, Fire Light”—I couldn’t help but mark it up as anachronistic. After all, hadn’t sincere gestural painting long ago gone extinct, laid to rest by the more object- and concept-oriented art that emerged in the ’60s and ’70s? Lonegan seemed to paint as if it hadn’t. Joan Mitchell’s similarly squarish Mephisto, 1958, came to mind, as did Willem de Kooning’s Untitled XIII, 1975, a late work painted in the East Hamptons.