I dont know if that is ever done, but I do know michael young was advertising on the rolex forum last month that he had found un-used tritium paint when an old watch shop closed and was using it in rolex dial repairs.
It would not glow anymore, but would be the right color and would register on a Geiger counter.
Wonder if they could have mixed fresh
phosphor material into the paint, remaining active half-life of the tritium would still have allowed a reaction to generate some phosphorescence.