gistfile1.xml

<Style TargetType="controls:PickerBox">
	<Setter Property="Template">
		<Setter.Value>
			<ControlTemplate TargetType="controls:PickerBox">
				<StackPanel>
					<VisualStateManager.VisualStateGroups>
						<VisualStateGroup x:Name="ButtonStates">
							<VisualStateGroup.Transitions>
								<VisualTransition GeneratedDuration="0:0:0.1"/>
							</VisualStateGroup.Transitions>
							<VisualState x:Name="Pressed">
								<Storyboard>
									<ObjectAnimationUsingKeyFrames Storyboard.TargetName="PopupToggle" Storyboard.TargetProperty="Background">
										<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneRadioCheckBoxPressedBrush}" />
                                    					</ObjectAnimationUsingKeyFrames>
									<ObjectAnimationUsingKeyFrames Storyboard.TargetName="PopupToggle" Storyboard.TargetProperty="BorderBrush">
										<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PhoneRadioCheckBoxPressedBorderBrush}" />
                                    					</ObjectAnimationUsingKeyFrames>
								</Storyboard>
							</VisualState>
							<VisualState x:Name="Normal"/>
						</VisualStateGroup>
					</VisualStateManager.VisualStateGroups>
						
					<TextBlock Text="{TemplateBinding Label}" Style="{StaticResource PhoneTextSubtleStyle}" />
					<ListBoxItem Content="{TemplateBinding SelectedItem}"
									ContentTemplate="{TemplateBinding ItemTemplate}" 
									x:Name="PopupToggle" Margin="20,0" controls:TiltEffect.IsTiltEnabled="True"
									BorderThickness="2" BorderBrush="{StaticResource PhoneRadioCheckBoxBrush}"
									Background="{StaticResource PhoneRadioCheckBoxBrush}" Foreground="{TemplateBinding Foreground}"/>

					<Popup x:Name="PickerPopup" IsOpen="False" Width="480" Height="800">
						<Border Background="{StaticResource PhoneChromeBrush}" Width="480" Height="800" Padding="0,32,0,0">
							<StackPanel>
								<TextBlock x:Name="PickerListHeader" Text="{TemplateBinding Header}" Style="{StaticResource PhoneTextBlockBase}" FontSize="24" Margin="25,20,0,20"/>
								<ListBox x:Name="PickerListBox" Height="696" controls:TiltEffect.IsTiltEnabled="True" ItemContainerStyle="{StaticResource PickerBoxItemStyle}" ItemTemplate="{TemplateBinding ItemTemplate}" />
							</StackPanel>
						</Border>
					</Popup>
				</StackPanel>
			</ControlTemplate>
		</Setter.Value>
	</Setter>
</Style>