Philosophical Question:
I've got a lit on/off button on my cab. It will be one color when the cab is on, and another color when the cab is off. Another way to say that it… it is one color when the pressing the button turns the cab on, and another color to turn the cab is off.
The question: Should the color on the power button show the state of the cab (red when off / green when on) or should the color indicate the function to be performed when pressed (green to go/start, red to stop)? So you walk into a room. The machine is off, what color should the button be?