gaugeArea.border.colorString(default: "black")
The color of the border. Any valid CSS color string will work here, including hex and rgb.
Example
<div id="gauge"></div>
<script>
$("#gauge").kendoCircularGauge({
value: 50,
gaugeArea: {
border: {
color: "#ff6358",
width: 1
}
}
});
</script>