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@Penindini,
You can set dataPoint color based on the the dataPoint value, whether its rising or falling. Please check this jsfiddle for an example.
function changeBorderColor(chart){ var dataSeries; for( var i = 0; i < chart.options.data.length; i++){ dataSeries = chart.options.data[i]; for(var j = 0; j < dataSeries.dataPoints.length; j++){ dataSeries.dataPoints[j].color = (dataSeries.dataPoints[j].y[0] <= dataSeries.dataPoints[j].y[3]) ? (dataSeries.risingColor ? dataSeries.risingColor : dataSeries.color) : (dataSeries.fallingColor ? dataSeries.fallingColor : dataSeries.color); } } }
— Vishwas R Team CanvasJS