Xamarin Shell Navigation Flyout Selected Label Color Not Changing

here is my code in shell.xaml selected frame colour for flyout item is working for me its green it showing well but for the selected label it is same as normal flyout label color i dont know what i am missing here

this is for flyout item frame

<Style x:Key="FloutItemStyle" TargetType="Frame">
<Setter Property="VisualStateManager.VisualStateGroups">
<VisualStateGroupList>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="Selected">
<VisualState.Setters>
<Setter Property="BackgroundColor" Value="#384a1a"/>                                    
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateGroupList>
</Setter>
</Style>

this is for label style

<Style x:Key="FloutItemStyles" TargetType="Label">
<Setter Property="VisualStateManager.VisualStateGroups">
<VisualStateGroupList>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal">
<VisualState.Setters>                                    
<Setter Property="TextColor" Value="#6b6b6b"/>
</VisualState.Setters>
</VisualState>
<VisualState x:Name="Selected">
<VisualState.Setters>                                    
<Setter Property="TextColor" Value="#fff"/>
</VisualState.Setters>
</VisualState>
</VisualStateGroup>
</VisualStateGroupList>
</Setter>
</Style>

this my template

<Shell.FlyoutHeaderTemplate>
<DataTemplate>
<Grid HeightRequest="110">
<Grid.RowDefinitions>
<RowDefinition Height="2*"/>
</Grid.RowDefinitions>
<FlexLayout x:Name="imageHolder" AlignItems="Center" JustifyContent="Center" Padding="20,10" BackgroundColor="#fff">
<Image Source="logo.png" />
<Label TextColor="#6b6b6b" x:Name="UserName"></Label>
</FlexLayout>
</Grid>
</DataTemplate>
</Shell.FlyoutHeaderTemplate>
<Shell.ItemTemplate >
<DataTemplate  >
<Frame Style="{StaticResource FloutItemStyle}"  Padding="25,5">                
<FlexLayout Margin="0,5" AlignItems="Center" JustifyContent="Start">
<Frame Padding="5" HeightRequest="30"  WidthRequest="30" CornerRadius="100"> <Image Source="{Binding FlyoutIcon}"
Margin="5"
WidthRequest="30"
HeightRequest="30" />
</Frame>
<Label  Style="{StaticResource FloutItemStyles}"  Padding="25,0,0,0" 
Text="{Binding Title}"
FontAttributes="Bold"
FontSize="18"
VerticalTextAlignment="Center" />
</FlexLayout>       
</Frame>
</DataTemplate>
</Shell.ItemTemplate>