Xamarin Forms control the color/title of the header bar

Question

I have the following form created with Xamarin Forms. I have drawn in a red rectangle to highlight the problem area. I need the blue color in the header to be a different colo

Answer 1

Set the BarBackgroundColor of the NavigationPage. You can do something like this (in the most basic example sense):

        var nav = new NavigationPage
        {
            Title = "Detail"
        };
        nav.PushAsync(new ContentPage() { Title = "Home" });
        nav.BarBackgroundColor = Color.MediumPurple;

        var mdp = new MasterDetailPage()
        {
            Master = new ContentPage()
            {
                Title = "Master"
            },
            Detail = nav
        };
        MainPage = mdp;

The title of the ContentPage being presented by the NavigationPage is what will show the title on that bar.