Now we are talking! On the tribute mule car why is it painted yellow when it was white in the day?
No, it was yellow. The story I got was, back in the day Mopar was much more concerned with NASCAR than their drag program, so the drag racing division got the leftovers from some NASCAR projects. Part of that went even as far as paint, so that's why you see the weird pale yellow on the car & if you look at later photos of the car, the phrase "Nobody cares" on the back of the car.
That indifference seems to have carried on, as if you look at the "1320" concept Challenger, there's some politically incorrect phrasing on that car too...