Boring, sad, neglected walls, that will no doubt be torn down and replaced by other newer equally boring sad walls, funnel me to work. It's nice of the youth to try and brighten up the tedium of reinforced concrete expanses of beige. They should probably ask permission before they emblazon 'tags' on a wall but that would probably defeat the whole point of graffiti. The sunlight transforms the scene; natural, life giving, hope filled rays bring beauty to the chaos.
Watercolour on paper