[Feature Request] Dark theme for selected sites like in Opera GX.

A Former User

Could you please add this really useful feature to the Opera/Opera beta browser, so Linux users could enable/disable dark mode for selected sites.
For now all we get (no ext) is only single global enable-force-dark
flag with no adjustments.
I also found out that setting opera://settings/content/forceDarkMode does nothing related to dark theme (maybe I just don't get it) in Opera and Opera beta for linux/windows both verison 76.0.4017.88.
So we ask you to add it.