Style Stack tabs

StyleTabs.xaml

<Grid
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:sys="clr-namespace:System;assembly=mscorlib"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:zones="clr-namespace:LostTech.Stack.Zones;assembly=Stack"
    zones:Layout.Version="2"
    mc:Ignorable="d"
    Width="1024" Height="576"
    d:DesignWidth="1024"
    d:DesignHeight="576"
    x:Name="Root"
>
  <Grid.Resources>
    <ResourceDictionary>
      <Style TargetType="zones:WindowButton">
        <Setter Property="Width" Value="450"/>
      </Style>
    </ResourceDictionary>
  </Grid.Resources>

  <Grid.RowDefinitions>
    <RowDefinition Height="Auto"/>
    <RowDefinition Height="*"/>
  </Grid.RowDefinitions>

  <zones:WindowTabs ItemsSource="{Binding Windows, Source={x:Reference Main}}"/>

  <StackPanel HorizontalAlignment="Center">
    <zones:WindowButton Background="Red" />
  </StackPanel>

  <zones:Zone x:Name="Main" Grid.Row="1" />
</Grid>