Halloween, and the day cures into night like the flesh of a pumpkin. The sky is watery as the sun sinks, with a hint of weak blue-green. It mellows through cream into a light yellow which deepens through a committee of oranges to a deep umber bruise where the sun has fallen. The fens fade into blue mist, in the way that the wax of pumpkin skin clouds when you cut it, putting the radiance of the background colour behind a cataract.