比较列表中的双精度值，并根据值设置颜色

我有一个双精度的列表，我想显示一个标签的值，这是好的。但是我想让背景有一个阴影，如果值接近最大值，红色，如果它接近最小值，蓝色，或者如果它接近中位数，白色。

    public partial class UserControlTest : Window
    {
    private double Highest;
    private double Minimum;
    private double Median;
    public UserControlTest()
    {
        InitializeComponent();
        DataSource dataSource = new DataSource();
        Data dataSet = dataSource.GetData();
        Bind(dataSet);
    }
    private void Bind(Data dataSet)
    {
        Highest = Convert.ToDouble(dataSet.Values.Max());
        Minimum = Convert.ToDouble(dataSet.Values.Min());
        Median = ((Highest - Minimum) / 2) + Minimum;
        stk1.Children.Add(DisplayLabel(dataSet));
        stk1.Children.Add(DisplayMax(dataSet));
        stk1.Children.Add(DisplayMin(dataSet));
        stk1.Children.Add(DisplayMed(dataSet));
    }
    private Label DisplayLabel(Data dataSet)
    {
        var label = new Label()
        {
            Content = String.Join(" , ", dataSet.Values),
            Background = new SolidColorBrush(Colors.AliceBlue)
        };
        return label;
    }

    private Label DisplayMax(Data dataSet)
    {
        var maxlabel = new Label() 
        {
            Background = new SolidColorBrush(Colors.Red)
        };
        return maxlabel;
    }
    private Label DisplayMin(Data dataSet)
    {
        var minlabel = new Label()
        {
            Background = new SolidColorBrush(Colors.Blue)
        };
        return minlabel;
    }
    private Label DisplayMed(Data dataSet)
    {
        var medlabel = new Label()
        {
            Content = Median,
            Background = new SolidColorBrush(Colors.Pink)
        };
        return medlabel;
    }

}

}