I like this image because, besides the bright colors, it has some interesting lighting effects. Sunlight is reflecting off some windows across the street, spotlighting the fire hydrant and the purple sign which would otherwise be lost in the shadow of the building. The reflected light also creates a shadow from the fire hydrant that lies at a right angle to the rest of the shadows in the photo. Why is that cool? It breaks the mold of the normal patterns in the way things work, or the way we think they ought to work.