Contributed by Natasha Sweeten / On a warm, sunny day that teased people outdoors, I stepped into Zwirner to catch Joe Bradley’s current exhibition, “Vom Abend.” Nine large paintings gleamed within the pristine gallery. I’d in fact been on my way to see another show, but at Zwirner I lingered and I looked, unexpectedly beguiled. Pretty soon I relaxed and accepted I’d be here a while.