Sticky menu different color of logo and background

Hi,

I have sticky menu activated on my page, but when I scroll up it appears the menu with a black background. And I want to change it to white.

And also I need, in the homepage, a menu with white logo and whit typography but in the other pages I need a dark logo and dark typography.

Squarespace doesn't allow this combinations right?

Is it possible to do it with code?

Thanks!

PD: web password  is molsa2023

No URL to the site?

www.molsataller.com

password: molsa2023