Blue Headlamps on Super Stock cars

I realize headlight and top lights are two different scenarios. But I've driven my 71 Polara patrol car 10,000 miles in the last 5 years and have never been stopped. I've talked to a couple patrolman, they said as long as they are not turned on out on a public road your OK. one retired officer told me if I turned them on, on a public road I would go to jail!