How to change the marker color of the appointments in WinForms ScheduleControl?

public class SimpleScheduleDataProvider : ScheduleDataProvider
{
   ListObjectList markerList;
    /// <summary>
    /// Get the markers for appointments
    /// </summary>
    /// <returns></returns>
    public override ILookUpObjectList GetMarkers()
    {
        return MarkerLists();
    }
 
    /// <summary>
    /// Set the marker color for appointments.
    /// </summary>
    /// <returns></returns>
    private ListObjectList MarkerLists()
    {
        markerList = new ListObjectList();
        markerList.Add(new ListObject(0, "InProgress", Color.FromArgb(50, Color.Yellow))); ////same as noMarkColor
        markerList.Add(new ListObject(1, "Done", Color.Green));
        markerList.Add(new ListObject(2, "Busy", Color.Violet));
        markerList.Add(new ListObject(3, "Out of Office", Color.Tomato));
        return markerList;
    }
}

Public Class SimpleScheduleDataProvider
       Inherits ScheduleDataProvider
   Private markerList As ListObjectList
      ''' <summary>
      ''' Get the markers for appointments
      ''' </summary>
      ''' <returns></returns>
      Public Overrides Function GetMarkers() As ILookUpObjectList
            Return MarkerLists()
      End Function
 
      ''' <summary>
      ''' Set the marker color for appointments.
      ''' </summary>
      ''' <returns></returns>
      Private Function MarkerLists() As ListObjectList
            markerList = New ListObjectList()
            markerList.Add(New ListObject(0, "InProgress", Color.FromArgb(50, Color.Yellow))) '//same as noMarkColor
            markerList.Add(New ListObject(1, "Done", Color.Green))
            markerList.Add(New ListObject(2, "Busy", Color.Violet))
            markerList.Add(New ListObject(3, "Out of Office", Color.Tomato))
            Return markerList
      End Function
End Class