Dark mode optional

[dsshard]

Hi! This is a super cool product, and often helps me out. Thank you!

I really miss the dark mode, since I often work at night, and the abrupt switch to the "light" tab is very irritating to the eyes.

I made a patch for myself that simply makes the body background #000 and it helps me. But it would be cool to add this as an option for the settings.

Thanks again for the product, you are awesome!

[dsshard]

#643

[valscion]

Yeah a dark mode could be useful. I'd rather avoid adding a new option for it, though — but some sort of a UI feature for a dark mode could be useful.

I could imagine that it'd work like this:

1. Check localStorage if a light/dark mode setting has been previously selected. If so, use that selection.
2. Check prefers-color-scheme and use that as a default
3. Allow user to override what prefers-color-scheme had and persist that to localStorage

The simplest first iteration could be to only add support for prefers-color-scheme and not mess with localStorage at all.