Just made a ton of changes to my The Events Calendar reset gist. Now is reassigns TEC custom properties to equivalent #WordPress core custom properties (configurable in `theme.json`) so that the designs are much more likely to match your theme out of the box.
https://gist.github.com/mrwweb/6f5ba48873d9bd24dfc23eed7ad934df
Happily, I also got to remove some recommended template fixes because the plugin saw this and put them into the plugin 😊