Ugh, the stock dark theme from Google is very amateur and unprofessional looking, when compared to these absolutely amazing pieces of art like this. Why does Google themselves put out a half assed poor dark theme, when regular Joe's can create fantastic themes like these below?
Swift Dark theme;
https://play.google.com/store/apps/details?id=com.brit.swiftdark.substratum&hl=en_US
Swift Black theme;
https://play.google.com/store/apps/details?id=com.brit.swiftblack.layers&hl=en_US
Pitch Black theme;
https://play.google.com/store/apps/details?id=pitchblack.origins.westcrip
Plus Google's theme doesn't really do it properly. A text message will still come in as a white notification, even though you have it set to Dark Mode. So only the Messages app itself will be dark, but get a new text and you'll see it blinding white still
With Substratum themes, it's system wide EVERYTHING gets themed. There's zero white notifications, no white hiccups here or there, it all gets themed the color you chose, deep down into the entire phone.
Why Google can't do this, but part timer programmers can for fun, is crazy.
Running the Swift Black theme compared to the stock Google Dark mode, is night and freaking day in quality, and artistic value. These Sub themes are a million times better designed.
What you want is a system-wide dark theme. I agree. I hope it arrives with Android Q. Samsung's software has had system-wide theming for years, and OnePlus has a system-wide dark mode already, too.