If we add several series onto the pie chart, every data point's color is assigned according to the "colors" option and even some of the data have the same name, they may have the different color.

Can we improve it by maybe adding an option called "uniqueLegendColorForSameDataName" to assure that all the data point with the same data name have the same color and just one entry in the legend?

Currently, the work around is to define the color for every data point and use the "showInLegend" option to hide the legend entries for some certain series.

But you cannot list all the colors if none of the series have all the data name.