No worries, sorry I had to re-add a new comment, so got rid of the old one, but I did have one follow up question. Right now, the Close Button X is a giant Red Circle when you hover over it.

Would it be possible to consider something a bit more Adwaita-friendly for the close button of Firefox? if no no worries, I just thought I'd ask to see, thanks again.

Edit: update 08.17.2023 - no worries mate, figured I'd ask anyways. Still loving your theme man, hope it's easy to keep it up to date! <3