A sky in the tradition of the great Romantic landscape painters, rendered in the precise, labour-intensive technique of copperplate engraving. Cumulus clouds build and billow across a pale grey ground, their forms modelled entirely through fine parallel lines — thousands of them, following the curve of each cloud mass, creating tonal gradations of extraordinary subtlety and depth. Between them, the lighter sky breathes and opens, giving the composition the rhythm of a real sky observed over time. The engraving technique is the subject as much as the clouds themselves. It speaks of a moment in the history of image-making when the reproduction of a visual experience required not a camera but a craftsman — a hand moving across a metal plate with a steel tool, line by line, building a world from scratch. That labour is visible in every mark, and it gives the design a quality of concentrated attention that no photographic or digital technique can replicate. Grey is the version that reads most purely as sky — luminous, tonal, endlessly variable in different lights. A wall that seems to open rather than close a room, to extend space rather than contain it, to suggest weather and time and the particular mood of a sky that has not yet decided what it intends to do. Exceptional in living rooms, bedrooms, studies and hallways where the ceiling is not enough sky for the room's ambitions.