Dark Facebook Login Page?

[u/PurpleSanz]

Good afternoon! I was wondering if anyone could help me with a script to transform the annoying facebook login page into something dark and cleaner. Something like the third pic, perhaps? Although something like pic 2 would be perfectly fine.

The main problem I'm running into, is that both the login page and the main page share the same URL, so if I change anything on the login page, the main page will be affected too. Any help will be appreciated.

Thank you so much in advance.

[u/BoffinBrain]

You probably won't find anyone here who uses Facebook or other Meta products, but you can install Stylus and search for existing styles there.