Works just as well as you'd expect. After installing I just set the extension to dark mode and Google classroom went dark. What more could I want?

Thank you SO much for this app - works great!

I've looked for a pretty, working extension for Firefox to use on Google Classroom that makes it dark mode.
None has worked better. Other than the ~1 second loading times, the usage is flawless. Why doesn't Google just adopt this extension into a real dark mode setting?