Using AppShell the ContentPage 's footer is not white, why? - xamarin.forms

Question

I using the AppShell, like I show the flow here
How to change the Status Bar in Xamarin Forms ContentPage using AppShell?
at this point I have an issue related with ContentPage's footer, that should be White, but is not, see this picture
In my code I am doing:
BackgroundColor="White"
Shell.BackgroundColor="White"
What is wrong?
I am doing this BaseStyle
<Style x:Key="BaseStyle" TargetType="Element">
<Setter Property="Shell.BackgroundColor" Value="{AppThemeBinding Dark={StaticResource Primary}, Light={StaticResource Primary}}" />
<Setter Property="Shell.ForegroundColor" Value="{AppThemeBinding Dark=Black, Light=White}" />
<Setter Property="Shell.TitleColor" Value="{AppThemeBinding Dark=Black, Light=White}" />
<Setter Property="Shell.DisabledColor" Value="#B4FFFFFF" />
<Setter Property="Shell.UnselectedColor" Value="#95FFFFFF" />
<Setter Property="Shell.TabBarBackgroundColor" Value="{StaticResource Primary}" />
<Setter Property="Shell.TabBarForegroundColor" Value="White" />
<Setter Property="Shell.TabBarUnselectedColor" Value="#95FFFFFF" />
<Setter Property="Shell.TabBarTitleColor" Value="White" />
</Style>
The XAML Page is
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage
x:Class="Toretto.MobileApp.Views.ForgetPasswordPage"
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:behaviors1="clr-namespace:Toretto.MobileApp.Behaviors"
xmlns:controls="clr-namespace:Toretto.MobileApp.Controls"
xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:local="clr-namespace:Toretto.MobileApp;assembly=Toretto.MobileApp"
xmlns:r="clr-namespace:Toretto.MobileApp.LocalizationResources"
BackgroundColor="White"
Shell.BackgroundColor="White"
Shell.NavBarIsVisible="False">
<ContentPage.Resources>
<ResourceDictionary />
</ContentPage.Resources>
<ContentPage.Content>
<StackLayout VerticalOptions="StartAndExpand">
<StackLayout.Padding>
<OnPlatform x:TypeArguments="Thickness">
<OnPlatform.Platforms>
<On Platform="iOS" Value="0, 30, 0, 0" />
<On Platform="Android" Value="0, 0, 0, 0" />
</OnPlatform.Platforms>
</OnPlatform>
</StackLayout.Padding>
<StackLayout
BackgroundColor="{StaticResource Primary}"
HeightRequest="60"
Orientation="Horizontal">
<Image
x:Name="BackImage"
Margin="10,0,0,0"
HeightRequest="36"
Source="{local:ImageResource Toretto.MobileApp.Resources.Images.back.png}"
VerticalOptions="CenterAndExpand"
WidthRequest="36">
<Image.GestureRecognizers>
<TapGestureRecognizer Command="{Binding BackCommand}" />
</Image.GestureRecognizers>
</Image>
<Label
Margin="-40,10,0,0"
FontSize="Medium"
HorizontalOptions="CenterAndExpand"
Text="{x:Static r:Resource.ForgetPasswordTitle}"
TextColor="White"
VerticalOptions="CenterAndExpand" />
</StackLayout>
<Label
Margin="20,20,20,0"
FontSize="Medium"
HorizontalOptions="StartAndExpand"
Text="{x:Static r:Resource.ForgetPasswordSubtitle}"
TextColor="{StaticResource TorettoDarkColor}" />
<Label
x:Name="EmailErrorLabel"
FontSize="Small"
HorizontalOptions="CenterAndExpand"
IsVisible="True"
Style="{StaticResource ValidationErrorLabelStyle}"
Text="{Binding Email.Errors, Converter={StaticResource ValidationErrorConverter}}" />
<Label
Margin="20,10,20,0"
FontFamily="Lobster-Regular"
FontSize="Medium"
Text="{x:Static r:Resource.User}"
TextColor="{StaticResource TorettoDarkColor}" />
<controls:CustomEntry
x:Name="customEntryEmail"
Margin="20,0,20,10"
IsPassword="False"
Style="{StaticResource CustomEntryStyle}"
Text="{Binding Email.Value, Mode=TwoWay}">
<Entry.Behaviors>
<behaviors1:EventToCommandBehavior Command="{Binding ValidateEmailCommand}" EventName="TextChanged" />
</Entry.Behaviors>
<!-- Sample -->
<Entry.Triggers>
<Trigger TargetType="Entry" Property="IsFocused" Value="True">
<Setter Property="BackgroundColor" Value="{StaticResource TorettoLightColor}" />
<!-- multiple Setters elements are allowed -->
</Trigger>
</Entry.Triggers>
</controls:CustomEntry>
<Button
x:Name="loginButton"
Margin="20,20,20,20"
Command="{Binding SendCommand}"
HeightRequest="40"
Text="{x:Static r:Resource.Send}"
TextColor="White"
VerticalOptions="Center">
<Button.Triggers>
<DataTrigger
Binding="{Binding Source={x:Reference customEntryEmail}, Path=Text.Length}"
TargetType="Button"
Value="0">
<Setter Property="IsEnabled" Value="False" />
</DataTrigger>
</Button.Triggers>
</Button>
</StackLayout>
</ContentPage.Content>
</ContentPage>

Answer 1

go to the App.XAML and change the Primary key to the color you want, or in BaseStyle you find Shell.TabBarBackgroundColor tag change this value to "White"