<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="Brushes.xaml" />
    </ResourceDictionary.MergedDictionaries>

    <Style x:Key="{x:Type ToolTip}"
           TargetType="ToolTip">
        <Setter Property="OverridesDefaultStyle"
                Value="true" />
        <Setter Property="SnapsToDevicePixels"
                Value="true" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ToolTip">
                    <Border Name="Border"
                            CornerRadius="2"
                            Background="#FFFFFFDD"
                            BorderBrush="Black"
                            BorderThickness="1"
                            Width="{TemplateBinding Width}"
                            Height="{TemplateBinding Height}">
                        <ContentPresenter Margin="3"
                                          HorizontalAlignment="Left"
                                          VerticalAlignment="Top" />
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

</ResourceDictionary>