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A collection of historical outline colors for candle sticks.
* If you set the BarColor property and the CandleOutlineColor property is not set, the outline color will take the color set by the BarColor property.
A color series type object. Accessing this property via an index value [int barsAgo] returns a color structure representing the referenced bar's outline color.
Note: This will only return the color of a bar in which an explicit color overwrite was used. Otherwise it will return Color [Empty].