Imagine the trompe l’oeil covering the front door of Number 298 Park Road, North London. Typical of its genre, the painting exploits existing panelling on the door to lend shadow and weight to the form it depicts. The correlation of forms between the door and the painting is so exact that the painter succeeds with a single pot of gloss paint and a broad brush in creating the effect that the red door is white in colour. A neighbour likes the colour and paints his front door white, and the two look identical.