Changing color of hover navigation in header, Roseti template

I need to change the hover menu that appears in navigation. My fixed header color is red and the hover menu is also red. I want to change the hover menu to a different color. I tried using the theme editor (Site styles -> Colors -> Selected theme (bright 2), but for life of me, I can't find the correct option to change this. I would prefer to change this via the style editor provided via Squarespace (i.e. without entering custom code if possible). I am using the Roseti template.

Thank you in advance. 

Hi. I think you need custom code to do this. Can you share link to your site? We can help easier

Thank you. Unfortunately, site is not yet public per organization's directions, and it is still being set up. 

If your site is trial/private, you can setup password & share url