<div id="surface"></div>
<script>
var draw = kendo.drawing;
var linearGradient = new draw.LinearGradient({
    stops: [
        { offset: 0, color: "#ff0000", opacity: 1 },
        { offset: 1, color: "#0000ff", opacity: 1 }
    ]
});

linearGradient.addStop(0.5, "#ffff00", 0.8);
var newStop = linearGradient.stops[2];
console.log("Added stop:", newStop.options.offset, newStop.options.color, newStop.options.opacity);

var surface = draw.Surface.create($("#surface"));
var rect = new draw.Rect(new kendo.geometry.Rect([10, 10], [120, 50]), {
    fill: linearGradient
});
surface.draw(rect);
</script>