In fact they're not shadows. Oh well it was all in the shadows, and the some areas were lighted by the reflection of the sun in a glass skyscraper around the corner
Well, you're right, what I meant is that it is inverted compared to the usual notion of shadows and light. I mean it is indirect lighting in a scene completely in the shadows.
Je trouvais le jeu de lumière sympa, et je me suis d'ailleurs demandé pendant plusieurs minutes d'où ça venait avant de trouver le gratte-ciel en question, un sacré monstre de verre et d'acier !
Anyway, it doesn't matter much I guess