markerColor: String

Sets the color of marker that is displayed on the Chart. Legend Marker for the series uses the same Color as set here unless overridden using legendMarkerColor property.

• If color is not set, dataSeries “color” is taken as “markerColor”.
• You can also set this property at dataPoint level- and hightlight a dataPoint from rest.

var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
 data: [{
   markerColor: "#008000",
  },
 ]
 .
 .
});
chart.render();