Thanks all! I will try it in B&W, although I tend to agree with the comments about the color contrasts being important to the image.
As for the lower part of the image, I like its collection of rectangular areas that contrast with those of the windows, and I don't think the tilted lines result from distortion. I took this from across a parking lot with a good telephoto and did a little perspective correction because I wasn't 100% dead center to it, and most of the "solid" horizontals and verticals (brick lines, window frames, that hanging chain) lined up OK, but some of the stuff lower down (wood panels, wire grates) is just not straight.