Why do you not do what we are doing in the Uk? We call them "Battenburg" markings because they look like a slice of Battenburg cake!! Red & yellow alternating squares down the whole length of the appliance.
You should stick with what you have.
To Emmet: I have done a couple rigs with chicago colors, but they were older.
To Anthony: Who cares if he does has black over red with a black stripe? You dont own a color scheme! He (and others) can do whatever they want to do.
I agree with everyone else. I would say stick with a black top. My rigs are red with a black top and FDNY-style stripes. Anyway, I also, I would stick with your Chicago-style paint scheme. No one has really done lego rigs after the CFD.
lol ok what i will do is keep the black over red but then i will possibly move the stripes and numbers to how they are on this truck (by the way this truck was the original engine 31 before i moved the colors to black on red and re numbered it)