Pro jazz trombonist here. All there is to usefully say about piano roll notation, with or without colours has pretty much already been said. And if you want more (much more) detail, then Tantacrul (designer on MuseScore) has done a great video.
The only useful head's up I can give is the current position marker on your playback is quite a long way behind the audio, around 1-2 beats on the one piece I tried.
https://youtu.be/Eq3bUFgEcb4?si=lcjA8fF4e3dINvmX
The only useful head's up I can give is the current position marker on your playback is quite a long way behind the audio, around 1-2 beats on the one piece I tried.