Just go to the Android Auto app settings on your device, and you'll be able to make all these changes. As for how to do that ...
To set it up, go to Android Auto settings on your phone, scroll down to the Maps section, tap Day/Night mode for maps, and ...
XDA Developers on MSN
4 Android Auto settings I changed to make it feel truly mine
Night Mode, setting a custom wallpaper, shifting media controls, and more.
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