Darker Medium applies a customizable dark theme to *all* medium formatted stories. You can customize the header background, main accent color, highlight color and link styles separately from the option menu. No matter the domain, if a site is using Medium, it will get a dark theme; that is the main advantage over Stylus and Stylish.
Sblack is a little free Mac app that applies a Dark Theme to Slack for Mac to make it easier on your eyes. Just drag and drop and you're done!
This Chrome™ extension changes page colors, brightness and contrast to increase readability and brings dark night mode to the world wide web.
✔ Inverts brightness instead of colors
✔ Improves readability
✔ Blue filter replaces blue light with red
✔ Activation and deactivation schedule
✔ User can add new themes
✔ Free forever