Thank you for writing back.
You can use the ChartTrackballController instance to change the backcolor of the TrackBall label. For the text color you can use the same instance, but you need to subscribe to the TextNeeded event and change the ForeColor there. This is needed because by default the text is html-like formated and just changing the ForeColor property won't take effect:
ChartTrackballController TrackBar =
TrackBar.Element.BackColor = Color.Red;
sender, TextNeededEventArgs e)
result += item.Series.Name;
result += ((CategoricalDataPoint)item.DataPoint).Value;
e.Text = result;
e.Element.ForeColor = Color.DarkBlue;
Please let me know if there is something else I can help you with.
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