ELK/FrameworkLocal/UICore/Style/CadetBlue/TreeViewStyle.xaml

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

    <Style TargetType="TreeView">
        <Setter Property="FontFamily" Value="Arial,SimSun" />
        <Setter Property="Background" Value="#FFDCF7F6"></Setter>
    </Style>

    <Style TargetType="TreeView" x:Key="ConfigTreeView">
        <Setter Property="HorizontalAlignment" Value="Left" />
        <Setter Property="VerticalAlignment" Value="Top" />
        <Setter Property="Width" Value="288"/>
        <Setter Property="Height" Value="766" />
        <Setter Property="FontSize" Value="12" />
        <Setter Property="FontFamily" Value="Arial,SimSun" />
    </Style>
</ResourceDictionary>