Hi,

You could use the FillSceneGraph event of the chart to loop through all chart elements and if it is a bar, you could change its color (by the PE element) depending on its value. Here is a sample code:

UltraChart ultraChart1;
public Form1()
{
    InitializeComponent();
    ultraChart1 = new UltraChart();
    ultraChart1.ChartType = Infragistics.UltraChart.Shared.Styles.ChartType.BarChart;
    
    this.ultraChart1.FillSceneGraph += new FillSceneGraphEventHandler(ultraChart1_FillSceneGraph);

    ultraChart1.DataSource = GetTable();
    ultraChart1.DataBind();

    this.Controls.Add(ultraChart1);
}

void ultraChart1_FillSceneGraph(object sender, FillSceneGraphEventArgs e)
{
    foreach (Primitive p in e.SceneGraph)
    {
        Box bar = p as Box;
        if (bar != null)
        {
            NumericDataPoint dp = bar.DataPoint as NumericDataPoint;
            if (dp != null)
            {
                if (dp.Value == 50)
                {
                    bar.PE.Fill = Color.Red;
                }

                if (dp.Value == 70)
                {
                    bar.PE.Fill = Color.Blue;
                }
            }                   
        }              
    }
}