Wolf Kahn: Color and Consequence (Ameringer McEnery Yohe, 525 W. 22, up through July 16). New paintings by an underappreciated modern master, a Hans Hofmann pupil who renders the American landscape in high-key colors that recall the luminous palette of Pierre Bonnard. The result is a deeply personal style in which abstraction and representation are so closely intertwined that they can’t be teased apart (TT).