Midi output for lighting up active notes on controllers

For midi controllers that can also receive midi input to light up (launchpad, midifighter, etc)

When utilizing the latch function for loops, it would be very useful to always be able to see directly on the controller which are active.

If this were implemented, it could also utilize the colors from the sound types set in the new keyboard edit mode. Maybe could even have that color set to a dimmer brightness when not active and full brightness when triggered.