BPA.SingleDevice/BPA.UIControl/Themes/ToolTip.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:bpa="clr-namespace:BPA.UIControl">

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="pack://application:,,,/BPA.UIControl;component/Themes/Resources/Default.xaml" />
    </ResourceDictionary.MergedDictionaries>

    <Style x:Key="RubyerToolTip" TargetType="ToolTip">
        <Setter Property="Background" Value="{DynamicResource FloatBackground}" />
        <Setter Property="Foreground" Value="{DynamicResource DefaultForeground}" />
        <Setter Property="HasDropShadow" Value="True" />
        <Setter Property="OverridesDefaultStyle" Value="true" />
        <Setter Property="Padding" Value="10 5" />
        <Setter Property="Margin" Value="5" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ToolTip">
                    <Grid>
                        <Border Name="Effect"
                                Width="{TemplateBinding Width}"
                                Height="{TemplateBinding Height}"
                                Background="{TemplateBinding Background}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                CornerRadius="{DynamicResource AllContainerCornerRadius}"
                                Effect="{DynamicResource AllDirectionEffect2}" />
                        <Border Name="Border"
                                Width="{TemplateBinding Width}"
                                Height="{TemplateBinding Height}"
                                Background="{TemplateBinding Background}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                CornerRadius="{DynamicResource AllContainerCornerRadius}">
                            <ContentPresenter Margin="{TemplateBinding Padding}"
                                              HorizontalAlignment="Left"
                                              VerticalAlignment="Top" />
                        </Border>
                    </Grid>

                    <ControlTemplate.Triggers>
                        <Trigger Property="HasDropShadow" Value="true">
                            <Setter TargetName="Border" Property="SnapsToDevicePixels" Value="true" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>