 The coloration of Susanna and Eileen—an emphatic and velvety white—might transform MoMA’s refrigeratorlike ambience into something like the Parthenon.That’s a stretch, but Mr. Grausman’s profound debt to the art of antiquity renders it not altogether inappropriate.Susanna and Eileen have been shaped with a silky emphasis on idealization—contours slope elegantly, symmetry quietly emphasized, with facial features stoic and streamlined.