But I decided a dozen years ago to see if there was a standard, and CEDIA seemed like it might have its act together; I was wrong, but they had a standard. They used red and green for the right channel and black and white for the left channel. The grounds were the green and the black. I remembered this by the phrase "Christmas colors are right." Whether you pay attention to Christmas or not, that phrase won't warp your heathen soul, so you can use it with impunity. And once again you must remember that in the world of audio, black is negative.