Dark Color Scheme #345

Do you have any plans to support a dark color scheme [that follows user preference, so light mode can stay/stays by default]?

Would you accept contributions that introduce it?

What would be your minimum requirements for it? With potential for successive followup improvements.

For example, the sponsor images have white background. A white padding could improve how they look, but they're background images on li with individual fixed sizes, so it's at least not trivial and in-place without DOM changes.

I don't have a Ruby environment, but could contribute changes. I drafted a branch with the first color changes, which obviously would need to be extended and tested.