Thanks for that.
I did find the quickstart repo eventually.
Hope this helps others.
I'm getting the sense that maybe currently there aren't a ton of themes available publically, but it's a little hard to search. Is there a master list or repo anywhere for themes?
Themes are specialized plugins, so you can find the "master list" by going to
Extend => Plugins => Find Plugins and searching for
Theoretically, this list should only contain updated themes, but YMMV.
Take a look at https://community.nodebb.org/top?cid=10 as well maybe some of those are useful.