For now it doesn't matter which exact colors to use as long as there is a system that distinguishes notes from different channels: since I am the only one who can test it and see how everything looks, ultimately I think I could responsible for "coloring".
Additionally, making the brightness respond to MIDI velocity is definitely an interesting idea, but I think it could lead to high velocity notes accidentally blinding the user :) Maybe let's not worry about this system for now and just let the inputted notes' brightness be controlled by the master brightness setting, like everything else?
For now it doesn't matter which exact colors to use as long as there is a system that distinguishes notes from different channels: since I am the only one who can test it and see how everything looks, ultimately I think I could responsible for "coloring". Additionally, making the brightness respond to MIDI velocity is definitely an interesting idea, but I think it could lead to high velocity notes accidentally blinding the user :) Maybe let's not worry about this system for now and just let the inputted notes' brightness be controlled by the master brightness setting, like everything else?