Rich, the cappings of honey are very white, and usually near the top of the frame. The cappings for brood are in a cirular shape in the center of the frame and are more 'golden' color, or tannish (if that's a color). They brood caps are slightly rounded too, the honey caps lie pretty flat. Sorry I don't have a pic off hand. The pic in this thread is brood, if you've ever seen a picture of comb honey, that is very smooth surface, very white, that's capped honey. Hope that helps.
btw, where in N. Il are you? I'm in Gurnee, although my bees are in N. Wis.