It seems like every year Google teases us with a dark mode and every year, once release rolls around, Android still doesn't have a comprehensive dark mode. It started with theAndroid M Developer Preview, which had a dark mode in the developer preview but not in the final Android 6.0 Marshmallow release.
The Play Store, Gmail, Search, and about a hundred other Google apps still won't have a dark mode unless the individual app designers go out of their way to make one.
Google seems like it is really trying to do this, as lately there has been a steadily growing roster of dark Google apps.
This will force a dark mode even on apps that don't have a dark mode designed by the developer, and XDA says it partially works on apps like Facebook and Web browsers.
As Google explained at its own developer conference recently, the proliferation of OLED screens has resulted in dark themes using less power overall than white themes, so switching to a dark theme will actually result in better battery life.
Google is still only using dark-grey themes in most of its apps and Android Q interfaces, so it's not saving as much power as it could with a pure black background. Still, Google said itscurrent dark-grey themes from apps YouTube and Google Maps reduce display power usage by 30 percent to 60 percent.
Android 8.0 Oreo added updatable graphics drivers to Android, which would allow users to download and install new SoC graphics drivers from the Play Store, just like an app.
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