Pushed a version of Thudfactor out that respects system color scheme settings more or less, but I can see a lot of little places that need attention. Rather than fix those, of course, I'm just stripping the front end all the way down to the markup and re-evaluating the bones.
This is really starting to come together. I'm trying @belldotbz ’s approach of working on global settings and layering in component designs last, so there's still a long way to go. But I already like what's here a lot better than my current live site.