The new Arteriors showroom, which opened earlier this month on the corner of Melrose Avenue and Huntley Drive in West Hollywood, is the 25-year-old brand’s first store selling directly to consumers. The 1,800-square-foot space displays more than 400 types of lighting fixtures, furniture, and accessories, all awash with natural light amid a light blue and green decor. Highlights include Arteriors’ popular polished nickel Duchess chandelier with smoke glass cylinders ($3,900) and its wood-and-iron Evan dining ta…