Reply to XONE 4d mod with extra leds

Hi there,

I'd like to mod my Xone 4d with extra led outputs, has anyone done that already?
The easy way im believeing about is buying an diy midi board with led outputs and plug that into the midi output of the 4D.
In traktor it's possible to configure led output on a different midi channel and i would choose the diy midi board.
So for any button i want i can configure an led with it, maybe replacing the black push buttons for led integrated?

What do you believe, is this going to work?
Will the button state stay in sync with the led (it's midi?
Does anyone have made such midi board with alot of leds, suggest ardunio or some?

I'd like to know your opinion, thanks!