Highcharts.chart('container', {
    title: {
        text: 'Halo options demonstrated'
    },
    xAxis: {
        categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
    },

    plotOptions: {
        series: {
            states: {
                hover: {
                    halo: {
                        size: 9,
                        attributes: {
                            fill: Highcharts.getOptions().colors[2],
                            'stroke-width': 2,
                            stroke: Highcharts.getOptions().colors[1]
                        }
                    }

                }
            }
        }
    },

    series: [{
        data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
    }]
});