[Solved]-HighCharts negative color for dataLabels-Highcharts

There is no built-in option like that. Still, you can define a data label for each point and set a proper color if the value is negative.

data: data.map(function (point) {
            return point < 0 
            ? {y: point, dataLabels: {color: 'black'}} 
            : point;
        })

example: http://jsfiddle.net/s8ay794r/1/