[Solved]-access svg element in a arearange HighCharts chart-Highcharts

It can be done exactly the same as in the answer mentioned in your question but instead of modifying the graph you have to modify the area property.

Code:

  chart.series[1].area.attr({
    fill: 'rgba(124,181,236,0.7)'
  });

Demo:

• https://jsfiddle.net/BlackLabel/abohcq4x/