Answer to Stack Overflow question: http://stackoverflow.com/questions/37978605/how-to-control-hightchart-pie-chart-donut-chart-label-font-weight-in-config

Mike Zavarello

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>

<div id="container" style="width: 600px; height: 400px; margin: 0 auto"></div>

JavaScript

$(function () {

    var colors = Highcharts.getOptions().colors,
        categories = ['MSIE', 'Firefox', 'Chrome', 'Safari', 'Opera'],
        data = [{
            y: 56.33,
            color: colors[0],
            drilldown: {
                name: 'MSIE versions',
                categories: ['MSIE 6.0', 'MSIE 7.0', 'MSIE 8.0', 'MSIE 9.0', 'MSIE 10.0', 'MSIE 11.0'],
                data: [1.06, 0.5, 17.2, 8.11, 5.33, 24.13],
                color: colors[0]
            }
        }, {
            y: 10.38,
            color: colors[1],
            drilldown: {
                name: 'Firefox versions',
                categories: ['Firefox v31', 'Firefox v32', 'Firefox v33', 'Firefox v35', 'Firefox v36', 'Firefox v37', 'Firefox v38'],
                data: [0.33, 0.15, 0.22, 1.27, 2.76, 2.32, 2.31, 1.02],
                color: colors[1]
            }
        }, {
            y: 24.03,
            color: colors[2],
            drilldown: {
                name: 'Chrome versions',
                categories: ['Chrome v30.0', 'Chrome v31.0', 'Chrome v32.0', 'Chrome v33.0', 'Chrome v34.0',
                    'Chrome v35.0', 'Chrome v36.0', 'Chrome v37.0', 'Chrome v38.0', 'Chrome v39.0', 'Chrome v40.0', 'Chrome v41.0', 'Chrome v42.0', 'Chrome v43.0'
                    ],
                data: [0.14, 1.24, 0.55, 0.19, 0.14, 0.85, 2.53, 0.38, 0.6, 2.96, 5, 4.32, 3.68, 1.45],
                color: colors[2]
            }
        }, {
            y: 4.77,
            color: colors[3],
            drilldown: {
                name: 'Safari versions',
                categories: ['Safari v5.0', 'Safari v5.1', 'Safari v6.1', 'Safari v6.2', 'Safari v7.0', 'Safari v7.1', 'Safari v8.0'],
                data: [0.3, 0.42, 0.29, 0.17, 0.26, 0.77, 2.56],
                color: colors[3]
            }
        }, {
            y: 0.91,
            color: colors[4],
            drilldown: {
                name: 'Opera versions',
                categories: ['Opera v12.x',...