Why do the New York Jets call plays according to color? -

If you mean the audible calls you hear when watching on TV, It s not just the Jets, plenty of teams use colors in audibles. Often the color, which is given first, is actually what signifies whether it s a real audible -- the quarterback is actually changing the play from what was called in the huddle -- or just a fake to confuse the defense. There s usually a weekly live color, though if necessary it can be changed at any time.There are also systems that use colors in regular play calling, the play calls that are made in the huddle that you won t hear. A particular color may be used for any play that includes a play-action pass, for example. So a simple play call like split right 31 dive, X zip might become green split right 31 dive, X zip, which would mean that the dive is actually a fake; the quarterback will be looking to pass.

So they can get through the red zone.