Dim button-LEDs?

I just received my KeyLab 61 MK3.
first thing I always like to do is to dim the brightness of the screen and the backlit buttons.
So far I have only found an option to dim the screen, not the buttons.

That’s kind of odd, because they are SO bright lit that I assume I don’t need any additional lights in my studio tonight … (not really, but you get the idea).

Is there any chance to dim down the brightness of the buttons?