Not because it’s mustard yellow, but because it refuses to fade back. Put this on a kids’ room wall and the whole room finds its centre the blue background cools everything down, the yellow keeps the mood cheerful, and the rust-red markings give the eye something to follow. It works above a low chest of drawers, beside a cot, or at the end of a hallway where children run past it every day. Pair it with pale wood, white painted furniture and one or two mustard cushions so the colours echo rather than compete. Don’t crowd it with lots of tiny character prints or busy wallpaper this one is happiest with clear space around it. On premium fine-art paper the flat colour blocks stay crisp and even.