For years I worked on a mobile 'heavy rock' disco but we didn't want the disco flashing light thing, we wanted to created a mood. The lights were all DMX controlled and we had a PC in a flight case with a USB-DMX adapter. From memory the rig was
6 x PAR56 on dimmer packs with rainbow gel selection
4 x gobo scanner
2 x moonflower
Each PAR can was one colour of the rainbow and we worked out which gobos were which, I wrote simple programmes that were just red, or just orange. Some move complex ones that moved the scanners, flipping gobo as they changed direction. But it was all very low key.
We retired from that game a long time ago, but a couple of years later someone asked us to do one last gig. We didn't have the PC anymore and had to borrow back the lights from the local high school we'd donated them to. I found that with only one scanner running a built-in pattern, the other three set to mirror it, we got 4 scanners all with the same colour, all moving in a sequence and it was fairly low key and not flashy. The dimmer packs let us put the PAR cans on a slow fade between channels - maybe a minute to move around them, and that worked OK. So looking back I probably wasted a lot of time programming fancy light shows - the built in stuff could be tweaked to be OK. Of course this is going back years to the days of single-colour halogen lamps.