Update point color

HTML

<script src="https://github.highcharts.com/bugfix/highcharts.js"></script>
<div id="container" style="height: 400px"></div>
<button id="button" class="autocompare">Update first point</button>

JavaScript

$(function () {
    $('#container').highcharts({
        chart: {
            type: 'column'
        },
        xAxis: {
            categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
        },

        series: [{
            data: [{
                 "y": 90,
                 "color": "rgba(255,0,0,1)"
             }, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
        }]
    });

    // button handler
    var chart = $('#container').highcharts();
    $('#button').click(function () {
         chart.series[0].data[0].update({
                 "y": 110,
                 "color": "rgba(0,255,0,1)"
             });
    });
});