“We subtracted all the color so you would notice the fantastic textures,” says Nate Berkus of his former Fifth Avenue penthouse. The home is a showcase for vintage furnishings, including a 1970s Maison Jansen brass and smoked glass coffee table, a George Pelletier ceramic pendant light, a 1970s chrome Soriana sofa by Tobia and Afra Scarpa, a circa 1950 Jacques Adnet leather vide-poche and a 19th-century French gilt mirror.