如何更改工具栏颜色？（xamarin.forms）

Question

How Change toolbar color?(xamarin.forms) how change blue to green?

<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
        xmlns:pages="clr-namespace:News.Pages"
         x:Class="News.MainPage"
        BarBackgroundColor="Green">
<TabbedPage.ToolbarItems>
    <ToolbarItem x:Name="btnSetting" Text="Setting" IconImageSource="Setting.png" Clicked="btnSetting_Clicked"/>
</TabbedPage.ToolbarItems>
<TabbedPage.Children>
    <pages:WorldPage Title="World" IconImageSource="world.png"/>
    <pages:TeredingPage Title="Trending" IconImageSource="trending.png"/>
    <pages:GamePage Title="Game" IconImageSource="xbox.png"/>
</TabbedPage.Children>
</TabbedPage>

screen of app

Answer 1

In Android Resource/Layout/Toolbar xaml, there is one property

android:background="?attr/colorPrimary"

Changing background property like following code:

<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ff99cc00"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" 
android:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

Answer 2

How Change toolbar color?(xamarin.forms) how change blue to green?

<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
        xmlns:pages="clr-namespace:News.Pages"
         x:Class="News.MainPage"
        BarBackgroundColor="Green">
<TabbedPage.ToolbarItems>
    <ToolbarItem x:Name="btnSetting" Text="Setting" IconImageSource="Setting.png" Clicked="btnSetting_Clicked"/>
</TabbedPage.ToolbarItems>
<TabbedPage.Children>
    <pages:WorldPage Title="World" IconImageSource="world.png"/>
    <pages:TeredingPage Title="Trending" IconImageSource="trending.png"/>
    <pages:GamePage Title="Game" IconImageSource="xbox.png"/>
</TabbedPage.Children>
</TabbedPage>

screen of app