A family member played with the display resolution and brightness settings. Fixing the resolution was easy, but it seems there's no way to restore default brightness. It's not a big deal (I just selected a brightness which is ok for me now) but I was wondering if in High Sierra there's a way to restore all the display settings to the factory defaults.
PS I'd prefer a solution which doesn't force me to reset all System Preferences to their factory defaults, just the display ones.
macOS High Sierra 10.13.5, MacBook Pro (15-inch, 2017)