Are the LED Rings around the rotaries of the Cntrl:r MDID-controllable?

Hi,
I am considering getting a Contrl:r. The Layout seems perfect for a drumsequencer I would like to programme in Maxforlive. However, I am wondering this: Is it possible to remote-control the LED-Rings around the rotary-knobs (NOT the encoders!)? I understand these are not "continuous" LED-rings, like these on the encoders. I just seeks to turn them on or off.
I found nothing about this in the documentation, however it seems to me, that there must be a way, why else should there be LED-rings at all?
Thanks!