What is kind of cool is how the city dyes all of the water in public fountains green. Like this:

This occurs mostly in the squares and Forsythe park, but I thought they dyed the river green too. It is pretty neat, but I can't imagine how well, gross it might look for green water to come out of wall fountains shaped like fish or children or something. I also don't know what they use other then food dye, but it's completely out of the system a day or two after the celebration. It also doesn't stain the statues or fountains, which is quite nice.
Yeah, I like to avoid the drunks, but there is a certain charm in green fountains.