In this show of Glenn Goldberg’s big new paintings, an absence of color lets wistful irony take center stage. The dot and the dash have long been the artist’s building blocks for playful imagery, usually loaded with buzzing color combinations. Here, one finds grayscale renditions of the artist’s familiar motifs—stars, mandalas, flowers, birds and rubber ducks. One duck nearly fills a seven-foot-tall canvas. An armless mudman-like character looms out of another painting titled A Friend. Stars in the background and stripes on the figure’s body suggest Jasper Johns’s White Flag, the intricate patterning illusionistically mimicking the texture of his encaustic and newsprint.