Common.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:imp="clr-namespace:GrapeCity.Windows.InputMan.Primitives;assembly=GrapeCity.WPF.InputMan">

    <LinearGradientBrush x:Key="EditorBorder" EndPoint="0,20" StartPoint="0,0" MappingMode="Absolute">
        <GradientStop Color="#ABADB3" Offset="0.05"/>
        <GradientStop Color="#E2E3EA" Offset="0.07"/>
        <GradientStop Color="#E3E9EF" Offset="1"/>
    </LinearGradientBrush>

    <SolidColorBrush x:Key="ListBoxBorderBrush" Color="#FF828790"/>

    <Style TargetType="{x:Type imp:DropDownWindow}">
        <Setter Property="AllowsTransparency" Value="true"/>
        <Setter Property="Placement" Value="Bottom"/>
        <Setter Property="PlacementTarget" Value="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}}"/>
        <Setter Property="StaysOpen" Value="False"/>
        <Setter Property="PopupAnimation" Value="{DynamicResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}"/>
        <Setter Property="MinWidth" Value="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}"/>
        <Setter Property="MinHeight" Value="{DynamicResource {x:Static SystemParameters.HorizontalScrollBarHeightKey}}"/>
    </Style>
</ResourceDictionary>