I don't know about those amps - I'm picturing something like those laser-pointers that are a menace to aircraft, maybe? - but Roland certainly has form in this area. As well as the TR-8S, they also saw fit to have the JD-Xi synth turn itself into a small plastic disco lightshow when it's been left unattended for a few minutes. It does make the instrument seem quite attention-seeking! Luckily there's a software setting to disable it though.