It should be possible. You need to send the note back to the device and probably use a modifier to record state. All notes that I sent back to the device showed up as red leds, but i was only banging on notes from another keyboard. You may also need to send the notes back regularly with the beat as when you press the button the led goes on and off, which could get your led out of sync with the modifier state. I haven't done it personally, but looked into it for the mpk mini which seems to behave similarly. It's bit of work to figure out, but traktor should be able to do it.
The question I have is can you trigger blue and purple leds from remote midi?
