I've searched for this for soo long and finally found this wonderful Addon. It does exactly what I always wanted and even more! The options are insanely good, the addon itself is very fast and works almost with every site!
One thing that I would love to have is to "blacklist" a site again when you have the site whitelisted with just a rightlick. Now you have to go to the addon settings and remove the URL (Right click --> "Exclude from Dark Mode").
