Can Notification Center be made black/dark in macOS Sierra beta? How do you get Notification Center to be dark/black in macOS Sierra beta? I had it that way in OS X El Capitan but cannot find how to do it in new beta.
Since the macOS Sierra update (Including Betas) the Notification Panel no longer uses the Dark Mode option, therefore it is permanently in light mode. This is an intended feature.

When Dark Mode is enabled on macOS Mojave or later, it will appear dark: