Prevent series from using clWhite with Delphi TChart

SetDefaultColorPalette; // Make sure we start with the default
ColorPalette[4] := $007FFF; // Change White to Orange
try
  // add series to the chart
finally
  SetDefaultColorPalette;  // Set it back to Default
end;

procedure TForm1.setColors(aChart: TChart; aColorArray: array of TColor);
var
  chi : Integer;
  coi : Integer;
begin
  coi := low(aColorArray);
  for chi := 0 to aChart.SeriesList.Count - 1 do begin
    aChart.SeriesList[chi].Color := aColorArray[coi];
    inc(coi);
    if coi > high(aColorArray) then
      coi := low(aColorArray);
  end;
end;

procedure TForm1.FormShow(Sender: TObject);
var
  ca : array of TColor;
begin
  setLength(ca, 3);
  ca[0] := clRed;
  ca[1] := clBlue;
  ca[2] := clGreen;
  setColors(Chart1, ca);
end;