Daniel Buren’s colorful stripes almost singlehandedly kept painting relevant within the highest echelon of the high-brow Conceptualist movement of the 1960s and ’70s. Some viewers might see these works simply as expensive wallpaper. Admirably changing with the times, Buren has introduced at Bortolami an arresting series of blue-and-white-striped compositions lined with fiber-optic strands.