en/builder/src/echarts3/chart/boxplot/boxplotVisual.js

var borderColorQuery = ['itemStyle', 'normal', 'borderColor'];
export default function (ecModel, api) {
  var globalColors = ecModel.get('color');
  ecModel.eachRawSeriesByType('boxplot', function (seriesModel) {
    var defaulColor = globalColors[seriesModel.seriesIndex % globalColors.length];
    var data = seriesModel.getData();
    data.setVisual({
      legendSymbol: 'roundRect',
      // Use name 'color' but not 'borderColor' for legend usage and
      // visual coding from other component like dataRange.
      color: seriesModel.get(borderColorQuery) || defaulColor
    }); // Only visible series has each data be visual encoded

    if (!ecModel.isSeriesFiltered(seriesModel)) {
      data.each(function (idx) {
        var itemModel = data.getItemModel(idx);
        data.setItemVisual(idx, {
          color: itemModel.get(borderColorQuery, true)
        });
      });
    }
  });
}