How to set Navigation Bar color on Android without highlight? I wanna to display pure color

I did this, but the color of navigation bar isn't what I want. I wanna to display the same color as that on iOS. What could I do?

    public class App
    {
        public static Page GetMainPage ()
        {   
            var masterPage = new MasterPage ();
            var navigationPage = new NavigationPage (masterPage){
                Tint = Color.Red,
            };

            return navigationPage;
        }
    }