Implement dark mode

[kelson42]

So people used to it does not get blinded. Not dedicated settings is required. Just based on the Browser configuration.

[audiodude]

Probably needs to be done after #767

[arybhatt4533]

Hi @audiodude, I'm interested in implementing Dark Mode as per #1029. I noticed it might depend on #767. Has #767 been resolved, or should I start by identifying the CSS variables that need to be updated for browser-based dark mode (prefers-color-scheme)

[audiodude]

Yes, we should hold off on implementing dark mode until we have migrated to Tailwind.