I do like this sort of photography, the focus on the detail, on a mere PART of something, it highlights those things, gives them a beauty of their own where most people think there cannot be beauty in any of such alleys at all. Hard to say which one is my favourite, I like them all, but the "Poopie" one makes me look the most.
Those are some hard core gangs spelling out boob and poopie haha sorry around here its the gangs that write graffiti everywhere but that may not be the case there..but anyways, nice shots , #3 is my favorite. Love the colors!