There are several navbar color types to choose. You can setup navbar type and scroll effect globally via Appearance > Customize > Main Navbar

Notice, that sometimes you can check changes in Customizer preview only after click on Save & Publish button.

Those settings will be automatically applied for every page, though you can change options for each page with Template Settings:

You can also define here:

1. if title bar should be displayed,
2. bar color,
3. bar size,
4. if title should be displayed,
5. if breadcrumbs should be displayed