OS-level utility needs APIs that are not there in case of Android. All night-mode apps for Android are just a reddish overlay. It often falls apart when you som

OS-level utility needs APIs that are not there in case of Android. All night-mode apps for Android are just a reddish overlay. It often falls apart when you something can't go through the overlay like AFAIR system passwords. I tried to use apps, but met with this wall several times. Android did have a night mode, but it was experimental and removed in later versions. So other than alternative ROMs there's nothing there.