Request: settable preference for dark mode

[CodyCBakerPhD]

Since @yarikoptic raised preference on dandi/access-page#74, raising mine here

Bright colors hurt my eyes, so I have a strong personal preference for Dark Mode wherever I go

This is a pretty common feature nowadays (GitHub, Google Docs, PyData Sphinx theme, even https://usage.dandiarchive.org)

[yarikoptic]

yeah, would be great to follow browser settings ! I bet it might take some "UX expert" & "Vue frontend designer" agents a few tokens to exchange to provide a decent solution ;)