wabbajack/Wabbajack/Themes/CustomControls.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:Wabbajack">
    <Style TargetType="local:AttentionBorder">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="local:AttentionBorder">
                    <Border BorderThickness="1">
                        <Border.Style>
                            <Style TargetType="Border">
                                <Setter Property="Background" Value="{StaticResource WindowBackgroundBrush}" />
                                <Setter Property="BorderBrush" Value="{StaticResource DarkerSecondaryBrush}" />
                                <Style.Triggers>
                                    <MultiDataTrigger>
                                        <MultiDataTrigger.Conditions>
                                            <Condition Binding="{Binding IsVisible, RelativeSource={RelativeSource Self}}" Value="True" />
                                            <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="False" />
                                            <Condition Binding="{Binding Failure, RelativeSource={RelativeSource AncestorType={x:Type local:AttentionBorder}}}" Value="False" />
                                        </MultiDataTrigger.Conditions>
                                        <MultiDataTrigger.EnterActions>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ColorAnimation
                                                        AutoReverse="True"
                                                        RepeatBehavior="Forever"
                                                        Storyboard.TargetProperty="(Border.BorderBrush).(SolidColorBrush.Color)"
                                                        To="{StaticResource Secondary}"
                                                        Duration="0:0:1.5" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ColorAnimation
                                                        AutoReverse="True"
                                                        RepeatBehavior="Forever"
                                                        Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
                                                        To="{StaticResource SecondaryBackground}"
                                                        Duration="0:0:1.5" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                        </MultiDataTrigger.EnterActions>
                                        <MultiDataTrigger.ExitActions>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ColorAnimation
                                                        Storyboard.TargetProperty="(Border.BorderBrush).(SolidColorBrush.Color)"
                                                        To="{StaticResource DarkerSecondary}"
                                                        Duration="0:0:0.1" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ColorAnimation
                                                        Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
                                                        To="{StaticResource WindowBackgroundColor}"
                                                        Duration="0:0:0.1" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                        </MultiDataTrigger.ExitActions>
                                    </MultiDataTrigger>
                                    <MultiDataTrigger>
                                        <MultiDataTrigger.Conditions>
                                            <Condition Binding="{Binding IsVisible, RelativeSource={RelativeSource Self}}" Value="True" />
                                            <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="False" />
                                            <Condition Binding="{Binding Failure, RelativeSource={RelativeSource AncestorType={x:Type local:AttentionBorder}}}" Value="True" />
                                        </MultiDataTrigger.Conditions>
                                        <MultiDataTrigger.EnterActions>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ColorAnimation
                                                        AutoReverse="True"
                                                        RepeatBehavior="Forever"
                                                        Storyboard.TargetProperty="(Border.BorderBrush).(SolidColorBrush.Color)"
                                                        To="#ff0026"
                                                        Duration="0:0:1.5" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ColorAnimation
                                                        AutoReverse="True"
                                                        RepeatBehavior="Forever"
                                                        Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
                                                        To="#540914"
                                                        Duration="0:0:1.5" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                        </MultiDataTrigger.EnterActions>
                                        <MultiDataTrigger.ExitActions>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ColorAnimation
                                                        Storyboard.TargetProperty="(Border.BorderBrush).(SolidColorBrush.Color)"
                                                        To="#700d1c"
                                                        Duration="0:0:0.1" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <ColorAnimation
                                                        Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
                                                        To="#1c0307"
                                                        Duration="0:0:0.1" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                        </MultiDataTrigger.ExitActions>
                                    </MultiDataTrigger>
                                </Style.Triggers>
                            </Style>
                        </Border.Style>
                        <ContentPresenter Content="{TemplateBinding Content}" />
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>