Yeah according to Allow users to select dark or light theme - admins - Discourse Meta and Automatic Dark Mode color scheme switching - announcements - Discourse Meta that should be possible, the option just has to be activated for users to be able to switch to it. @ivankravets?
Thanks! Please navigate to your account preferences and switch to the “dark” color scheme.
Works! (Must log-out and login though to see the option)
Thank you all and may the source be with you!