That github page links to the dodgy extension "Stylish". The better one is called Stylus. The main difference being "Any and all analytics, telemetry, and data

That github page links to the dodgy extension "Stylish". The better one is called Stylus. The main difference being "Any and all analytics, telemetry, and data-collection have been removed completely. We'd rather not know what you're up to." https://github.com/openstyles/stylus https://github.com/openstyles/stylus