How to change the axis divider line colors in Microsoft Chart Controls (column chart)

Question

See the chart below. I'm building the chart programatically, so no asp.net control syntax please.

How do I change the grid line colours that cross horizontally and vertically behind the bars? As you can see I've worked out how to change the actual axis colours, but the grid colours remain black.

public ActionResult RenderChart()
{
    var chart = new Chart();
    double[] yValues = { 65.62, 75.54, 60.45, 55.73, 70.42 };
    string[] xValues = { "Michelle", "Sarah", "Aliece", "Belinda", "Amanda" };
    var series = new Series
    {
        Name = "Default",
        ChartType = SeriesChartType.Column,
        CustomProperties = "DrawingStyle=Cylinder"
    };
    series.Points.DataBindXY(xValues, yValues);

    chart.BorderlineColor = Color.Silver;
    var area = new ChartArea("Test");
    area.AxisX.LineColor = Color.DarkGray;
    area.AxisY.LineColor = Color.DarkGray;

    chart.ChartAreas.Add(area);
    chart.Series.Add(series);
    series.IsValueShownAsLabel = true;

    series.Font = new Font(series.Font, FontStyle.Bold);
    chart.Width = 400;
    chart.Height = 300;

    using(var ms = new MemoryStream())
    {
        chart.SaveImage(ms, ChartImageFormat.Png);
        Response.ContentType = "image/png";
        Response.BinaryWrite(ms.ToArray());
        return new EmptyResult();
    }
}

Answer 1

Never mind, found the answer:

area.Axes[n].MajorGrid.LineColor = Color.Whatever;