Change FAQ Question Hover Color

How do I change the color of the hover effect of the Questions at FAQ´s on product/tour pages?

Hello, you can change the available colors like primary / secondary etc. through the customizer >> layout and design. Furthermore, you also have an option to add your custom css through customizer to change colors other than the ones mentioned above.

Thank you

I know that it works through customzer>> layout and design but I cant find the category for these FAQ colors in there?