When I find a theme that I really like I can't activate dark mode. Which is now a systemwide thing. What I would like to see is support for dark mode in 3rd party themes so we can have the theme we like most whilst still being able to enjoy the benefits of dark mode.
there’s a compatibility issue regarding the 3rd party themes. Many themes that are on the market were released some time ago and Dark mode has started to be supported recently. All of them should be updated to support the two colours set for the Dark mode to work. But it can’t be forced.