backgroundColor: String

Sets the background color of Navigator in StockChart. Values of backgroundColor can be specified in “HTML Color Name”, “hex code” or “rgba values”

Default: “#FFFFFF”
Examples: “blue”, “#0000FF”, “rgb(0,0,255)”, … 
var stockChart = new CanvasJS.StockChart("container",
{
 .
 .
 navigator: {
   backgroundColor: "blue"
 },
 .
 . 
});
stockChart.render();
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