Give the plain living room wall one hard decision, and let everything else relax. This is the piece that sets the colour temperature of a room, so the sofa, the rug and the cushions can all stay quiet and plain. Interlocking blocks of soft pink, olive green, orange, deep red and slate grey read as pattern from across the room and as separate shapes up close. Hang it above a sideboard, a desk or a two-seater sofa, centred and at eye level, with clear wall on both sides. Pair it with solid-colour textiles, mid-century wood and simple metal. Don’t put it next to busy florals, printed wallpaper or another strong multi-colour piece one loud voice per wall. On canvas the flat colour blocks keep a soft, painted edge with no glare.