The picture does show backlit buttons. However, whilst the hardware supports this, doing it would have required that (a) the buttons were made transparent, and (b) that we used white LEDs to ensure that whatever screen colour you had, the buttons lit up in the correct way. We were also worried about it looking strange as the rotary control wouldn't light up.

Still, the hardware support is in there (and they can be turned on/off/dimmed by sending commands to the display board)...

Hugo