CARPLAY - DARK NAVIGATION MODE WITH NO MAP, JUST POPUPS

Hi,
this request comes rom a personal experience:
I have a car that does not allow turning off the carplay screen at night neither to regulate the backlight enough, this, specially when it is also foggy make driving more hard.

My request is to provide a function where the map is totally black and only voice or "popups" are shown for navigation (with no navigation show popups only if requested for roadworks, speed traps, ....)

With such a feature we'll be enabled to drastically reduce the glare caused by overly bright displays at night (thanks to the display being almost off) and, if navigation is in progress, 
still have the notification popups.