Partly because it's all about developing the image and the mystique of the architect as tortured poet, but also because I once used it as the parameters of a brief for some students and when I was pointing out the importance of wearing black at all times I realised that one of my fellow tutors had been kind enough to prove me right, by turning up that morning in nothing but the aforementioned colour. Poor chap was a bit embarrassed - belated apologies if you're reading this, Mark.
Goodnight, I'm off to iron my orange flares.