Once @charliemcgrady's PR for the styling update/ pin functionality is landed, we should consider this to control the extreme verticality/space taken up by the selector and improve styling a bit:
[x] Reduce the space used by each horizontal row
[x] Make the theme sections collapsible
[x] Even/odd background changes to make it easier to parse visually
[ x Enforce same font families as the rest of the site text
[x] Get rid of extraneous scrollgutter
[x] Make the type rows smaller than themes/ de-emphasize them with lighter font-weights
[x] Enforce dark/light mode switcheroonies
[ ] Add a hover tooltip to the 'Pin' icon to give the user a brief message explaining what they do.
Once @charliemcgrady's PR for the styling update/ pin functionality is landed, we should consider this to control the extreme verticality/space taken up by the selector and improve styling a bit: