Neat! This is even better than what I had been using (color shifting to a red tint at night). For easier access, you can also set up Smart Invert to be trigger

Neat! This is even better than what I had been using (color shifting to a red tint at night). For easier access, you can also set up Smart Invert to be triggered by a triple-press on the lock button. That’s in Settings > General > Accessibility > Accessibility Shortcut.