I really liked how @kev 's navigation link stayed the "hover color" when you clicked that page. I was able to implement it on my own webpage with the help of this:
https://stackoverflow.com/questions/55408439/is-there-a-way-to-set-a-css-class-based-on-the-name-of-the-current-page-using-li

Basically some really basic if-else statements using Liquid!

My implementation of it is here:
https://codeberg.org/ndanes/website/src/branch/main/_includes/nav.html

@kev is this how you did you nav links in Jekyll?