The living room’s mostly neutral furnishings—comprising a custom sofa upholstered in a Kerry Joyce textile and a pair of side-by-side armchairs covered in a Manuel Canovas fabric—are enlivened by playful pops of color seen in antique blue opaline lamps from Parc Monceau and two Paul McCobb slipper chairs dressed in Nobilis’ embroidered Frida linen.