Dark Mode for the Google Voice app just appeared on my Pixel 3 XL running Android 10, following an update to version 2019.40.273569721.
What’s nice about this implementation is that inside of the app’s settings, all the way at the bottom, there’s a dedicated toggle for the theme. That means, even if your phone’s theme isn’t set to dark, you can keep Voice’s dark mode applied. Why can’t all apps be like this, Google?
Be on the lookout for the update.