Since there is an ambient light sensor on the mx keys, is there a way to implement a configurable ambient light treshold for backlight activation?

e.g. only turn on the backlights if the ambient light is under the specified levels and turn it off if the room ilumination puts the ambient light above the treshold.

As it is, if I have the backlights switched on, they will stay lit, regardless of ambient light.
Untill now, I've not seen the advertised automatic brightness settings at all.
The lights will stay on or off, but won't adjust.