Currently it’s pretty tough to do that, especially with the transparent navigation.
However, it is possible, you would just need to add code.
I helped someone with this here: https://generatepress.com/forums/topic/custom-page-header-in-taxonomy-archive-page/#post-210903
You would just need to replace the conditionals in there to match what you’re hoping for.
Let me know if you need more info 🙂