Dark mode

[torchsmith]

This is a very very rough start on dark mode. Still colors missing, not all colors look good or even correct at the moment.

Hopefully this starting point can bring us closer to dark mode.

Relating Issue #1

[pastelsky]

This is sweet! Could we feature flag and iterate on this though?

I think a good light mode is better than a half-baked dark mode while we iterate.

[torchsmith]

Yes 100%. This is not meant to be deployed at all haha, just an idea so far to push it forward a foot.