I was thinking of having an off show sequence, but I thought it would be better if I ddid't because it could just confuse people.
For example, my show runs until 9:30. If somebody rolls up at 9:45 and sees lights changing color, they would thinkn that the show is still on and would try tuning in their radio and not hear anything; they will just get confused/frustrated and drive away. Perhaps if the off show sequence had a loop saying that the lights were off for the night, that would work.
Sometimes you have to keep things simple for the public who are unfamiliar with our type of display. I'm even amazed at how many people who are mesmerized by the flashing lights who don't realize that my display has music even though there is a big sign out front showing "95.7 FM" on it.