Practically unheard of a generation ago, the discounts have become a routine part of many businesses—as common as color televisions in motel rooms and free coffee on airliners.

Green, as opposed to red, means safety; it is the color of free passage in road traffic.

Of course, pink might not be your particular choice of color usually, and if that's the case, feel free to add a color adjustment layer on top and use it to adjust the coloring.