Stephen Lawrie smiles in front of one of his paintings in the Pioneer Bar. (KCAW/Salemo) Stephen Lawrie sits at a booth in the Pioneer Bar in Sitka and points to a painting behind the counter. It’s a portrait of Art Petraborg, whose windswept white hair whisks across a canvas filled with dark clouds. “He’s got braided sideburns,” Lawrie points out. “Are you kidding me? I mean, that was the coolest thing I’d ever seen.” The two met nearly 50 year…