alley portraits

Why are alleys always dark in movies? I was in quite a light one today. Though i did meet some interestingly alley-cliché characters. There was a man with hose



a hot chick



and a dodgy character who reassured me grass boas were going to be 'the next thing'



By the way -alleyway- being the dodgiest character in an alley made me feel a little like being the oldest in a room -not sure if it's a good thing.