How to change background color of Windows Phone Listpicker in FullScreen Mode

How to change background color of Windows Phone Listpicker in FullScreen Mode

<Style TargetType="toolkit:ListPicker" x:Key="ListPickerStyle1">

<!--<Setter Property="Background" Value="{StaticResource PhoneTextBoxBrush}"/>-->

<!--<Setter Property="Background" Value="YellowGreen"/>-->

<Setter Property="Foreground" Value="{StaticResource PhoneTextBoxForegroundBrush}"/>

<Setter Property="FontSize" Value="{StaticResource PhoneFontSizeMediumLarge}"/>

<Setter Property="HorizontalContentAlignment" Value="Left"/>

<Setter Property="Margin" Value="{StaticResource PhoneTouchTargetOverhang}"/>

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="toolkit:ListPicker">

<StackPanel>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="PickerStates">

<VisualState x:Name="Normal"/>

<VisualState x:Name="Expanded">

<Storyboard>

<!--<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Border" Storyboard.TargetProperty="Background" Duration="0"> <DiscreteObjectKeyFrame Value="{StaticResource PhoneTextBoxEditBackgroundColor}" KeyTime="0"/> </ObjectAnimationUsingKeyFrames>-->

<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Border" Storyboard.TargetProperty="BorderBrush" Duration="0">

<DiscreteObjectKeyFrame Value="Yellow" KeyTime="0"/>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetName="Border" Storyboard.TargetProperty="BorderThickness" Duration="0">

<DiscreteObjectKeyFrame Value="200" KeyTime="0"/>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<ContentControl Content="{TemplateBinding Header}" ContentTemplate="{TemplateBinding HeaderTemplate}"

Foreground="{StaticResource PhoneSubtleBrush}" FontSize="{StaticResource PhoneFontSizeNormal}"

HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="0 0 0 8"/>

<Grid>

<!--<Border x:Name="Border" Background="Yellow" BorderBrush="{TemplateBinding Background}" BorderThickness="2">-->

<Border x:Name="Border" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding Background}" BorderThickness="2">

<Canvas x:Name="ItemsPresenterHost" MinHeight="46">

<ItemsPresenter x:Name="ItemsPresenter">

<ItemsPresenter.RenderTransform>

<TranslateTransform x:Name="ItemsPresenterTranslateTransform"/>

</ItemsPresenter.RenderTransform>

</ItemsPresenter>

</Canvas>

</Border>

<Popup x:Name="FullModePopup">

<!--<Border Background="{StaticResource PhoneChromeBrush}">-->

<Border Background="Yellow" BorderThickness="200">

<!-- Popup.Child should always be a Border -->

<Grid Background="Yellow">

<Grid.RowDefinitions>

<RowDefinition Height="Auto"/>

<RowDefinition/>

</Grid.RowDefinitions>

<ContentControl Grid.Row="0" Content="{TemplateBinding FullModeHeader}" Background="Yellow"

Foreground="{StaticResource PhoneForegroundBrush}"

FontFamily="{StaticResource PhoneFontFamilySemiBold}" FontSize="{StaticResource PhoneFontSizeMedium}"

HorizontalAlignment="Left" Margin="24 12 0 0"/>

<ListBox x:Name="FullModeSelector" Grid.Row="1" ItemTemplate="{TemplateBinding ActualFullModeItemTemplate}"

FontSize="{TemplateBinding FontSize}" Margin="{StaticResource PhoneMargin}" Background="Yellow">

<ListBox.ItemsPanel>

<ItemsPanelTemplate>

<StackPanel Background="Yellow"/>

<!-- Ensures all containers will be available during the Loaded event -->

</ItemsPanelTemplate>

</ListBox.ItemsPanel>

</ListBox>

</Grid>

</Border>

</Popup>

</Grid>

</StackPanel>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

using System.Collections;

using System.Windows;

using System.Windows.Controls;

namespace Microsoft.Phone.Controls

{

public interface IListPickerPage

{

string HeaderText { get; set; }

IList Items { get; }

SelectionMode SelectionMode { get; set; }

object SelectedItem { get; set; }

IList SelectedItems { get; }

DataTemplate FullModeItemTemplate { get; set; }

bool IsOpen { get; set; }

}

}

<toolkit:ListPicker x:Name="lpStr"

Grid.RowSpan="2"

Width="1"

Height="1"

CacheMode="BitmapCache"

ExpansionMode="FullScreenOnly"

Foreground="Black"

FullModeItemTemplate="{StaticResource ListPickerStringLargeTemplate}"

IsHitTestVisible="False"

Opacity="0"

PickerPageUri="/Views/Globals/ToolkitPages/MyListPickerPage.xaml" />

</Grid>