The Willis (Sears) Tower sports red on game days.
The CNA Building is the one with the Indian-head logo.
Chase Tower looked like it was trying to be red but it was more sort of magenta.,
Blue Cross/Blue Shield Building reads "Let's go Hawks".
AON building has a line of red lights near its summit.
The Hancock Tower's lights were red, white, black, white, red.
The Smurfit-Stone Building (the diamond-shaped top) says "Go Hawks".