Open the curtains at mid-morning; the soft blue-grey will handle the drama. It is a small amount of colour doing a lot of work, because everything around it stays pale and quiet. Put it up and a plain bathroom stops feeling like a utility room. Bath time gets a character to keep an eye on it, and grown-ups get something gentle rather than cartoonish. Best on the wall beside the bath, above a towel rail, or over a low chest in a child’s room. Pair it with white tiles, pale wood, chrome fittings and plain cotton towels. Don’t crowd it with busy patterned wallpaper or loud primary-colour prints; the humour here is quiet and it needs a bit of breathing space. On premium fine-art paper the pale background stays clean and the watercolour edges keep their softness.