It's actually just a quick'n'dirty piece of software that I wrote just to test this feature in their SDK. This is why the buttons are so small and no widget.
I have both items in my queue, but as my day job is about 18 hours a day, it's unlikely that I'll be able to do it any time soon.
As for the light, on my T68, long press on the home button (the middle of the joystick) turns the light on and off (I think that maybe a long press on the "Back" button does the same).
Which Onyx device do you have? Maybe one of the buttons there has the same functionality...