A bedroom this pared back can take one serious soft yellow. This vintage Japanese butterfly study brings just enough colour to a cream or off-white wall without tipping the room into busy. Two butterflies, one buttery yellow with dark green edges and one drawn in loose deep red lines, float across a warm cream ground with real breathing room around them. Hang it above a bed, a low dresser or a reading chair, at a slightly lower eye-level than usual so the empty space reads as calm rather than sparse. Pair with pale oak, linen, stoneware and a single warm green plant. Avoid stacking it against heavy patterned wallpaper or dark saturated walls, where the soft cream ground loses its lift.