@TenorTheHusky@kbin.social was kind enough to put together a search tool that does just this:
Very nice!
This is a great base for people to create their own. I much prefer the wider page width to Lemmy's default on desktop.
Personally, though, I find the box outline colors in these themes to be a little loud.
I tweaked the CSS and made it look a bit more understated.
Headsets and headphones are not the same thing and have very different market demographics.