public Boolean DefaultPen {get; set;}
Remarks
When true, the legend will use series pen properties to draw a border around the coloured box legend symbol.
When false, the Legend will use the legend symbol Pen property.
Example
[C#]
tChart1.Legend.Symbol.DefaultPen = false;
tChart1.Legend.Symbol.Pen.Color = Color.Green;
See Also
LegendSymbol Class | LegendSymbol Members | Steema.TeeChart Namespace