handleColor: String

Sets the handle color of Slider. Values of handleColor can be specified in “HTML Color Name”, “hex code” or “rgba values”

Default: “#efefef”
Examples: “gray”, “#271b1b”, … 
var stockChart = new CanvasJS.StockChart("container",
{
 .
 .
 navigator: {
   .
   .
   slider: {
     handleColor: "#9a9595"
   },
   .
   .
 },
 .
 . 
});
stockChart.render();
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