My obsession with pops of color and CTA trains is evident in most of my Chicago train imagery; give me a pop of teal blue and I’m over the moon. Add in the unexpected twist of a moose in the middle of this crazy town and, well, I can’t resist. My photo of the week, “In Search of Squirrel,” is also one of my favorites. Shot in the South Loop of Chicago, in the Wabash Arts Corridor, this was a delightful photograph to shoot. I was immediately struck by the geometric patterns created by the different buildings; Chicago’s architecture fascinates me in that way. You can have four completely diffrent…