Kepler-Release/Venus/Framework/SequenceControl/Themes/Generic.xaml

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

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="/SequenceControl;component/DataGridTransform/DataGrid/Themes/Generic.xaml" />
    </ResourceDictionary.MergedDictionaries>


    <LinearGradientBrush x:Key="GrayBlueGradientBrush"  
                         StartPoint="0,0" EndPoint="1,1">
        <GradientStop Color="DarkGray" Offset="0" />
        <GradientStop Color="#CCCCFF" Offset="0.5" />
        <GradientStop Color="DarkGray" Offset="1" />
    </LinearGradientBrush>

    <Style x:Key="PoppingExpanderSholdDelete" TargetType="{x:Type Button}">
        <Setter Property="Background"  Value="{StaticResource GrayBlueGradientBrush}" />
        <Setter Property="Width" Value="80" />
        <Setter Property="Margin" Value="10" />
    </Style>


    <Style x:Key="myButton" TargetType="{x:Type Button}">
        <Setter Property="Background"  Value="Red" />
    </Style>

   

</ResourceDictionary>