As I was looking at this marvelous show of Mary Heilmann at Hauser Wirth, the voice of my then 6-year old niece came to mind when I served her a simple dish of mushrooms and beans: “It’s just the way I like them.” That sums up Mary Heilmann’s paintings for me. There’s humor, joy, psychedelic color dreams, economy of shape and form, great color contrasts, and just an utter humming “rightness” in her work. It’s as though she’s daringly whittled down how little is enough to b