Gang, What are the apps you guys use/recommend for those sites which do not have Dark mode. Even though my Mac is set for Dark mode, there are some sites that are still in Light mode. Looking for a way to force them into Dark mode. On iOS I found Noir and its great. But its iOS only.
Thanks for all your suggestions 
Dark Reader is one that’s been around for a while. I don’t think it detects whether a site has a built-in dark mode but, other than that, it seems to work fairly well.
I’m hoping the author can quickly port Noir to macOS Monterey, once that has been released.
(He informed me Noir uses some API that’s not available in macOS Big Sur)