This new design flexibility enables you to change how your sites look on scroll by replacing the logo. It’s a simple way to make your sites more eye catching as visitors scroll. You can display a similar logo (with a different color scheme) that highlights the logo and/or complements the design on scroll.
How to access this feature:
This change can have a big effect on how your site looks, and it's a great way to refresh your site with little effort.
For more tips on how to design a great website header, check out this blog.