Xamarin.Forms : Customize NavigationBar in UWP

Hello,

I'm working on a Cross-Platform project with Xamarin.Forms 2.3.3.180.

Using BarBackgroundColor property, changing NavigationBar Color works fine on Android, but on UWP only the bottom bar is changed.

The top one with menu Button of the master-Detail page stays Grey and White.

Do you know how to customize the header bar on UWP ?

Thank you for your help.