On a warm afternoon, the dark green looks almost illegally fresh. A calm, painterly portrait that pulls a room together without shouting — the blue kimono, the terracotta sofa and that big leafy palm do the heavy lifting. Hang it in a living room or bedroom that already has a bit of colour going on, or use it to warm up a room that leans too pale. It sits well above a low sideboard, a small sofa or a reading chair. Pair with cream bouclé, mustard or terracotta cushions, pale oak and a real houseplant or two. Keep the wall around it fairly quiet so the blue and green can breathe. Avoid pinning it next to cold grey furniture or busy patterned wallpaper.