score:1

Accepted answer

Series that are currently visible are available in series array of chart obejct. If you want to change them just call their update function:

setTimeout(function() {
    chart.series[0].points[0].doDrilldown();
}, 2000);

setTimeout(function() {
    chart.series[0].update({
    color: '#bada55'
  });
}, 4000);

Live demo: http://jsfiddle.net/BlackLabel/1L4avxtw/

API reference: https://api.highcharts.com/class-reference/Highcharts.Series#update


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