Chalk and charcoal challenge no. 1: architecture in 5 minutes.
It looked warmer than it was: 11 degrees but felt like 7 - or less. I went to the edge of the green where the evening sun was striking the white render of the houses at the end of the cul-de-sac. White gutter, white window frames, white wall, white car, white cloud, bright grass.
Shadows were various shades of charcoal - on chimneys, gable ends, and the dark side of trees and bushes.
It all took longer than 5 minutes - but not much longer because of the cold.