<div id="diagram"></div>
<script>
$("#diagram").kendoDiagram({
    shapes: [{
        id: "1",
        content: { text: "Hover Fill Default" },
        x: 100,
        y: 20,
        connectorDefaults: {
            hover: {
                fill: {
                    color: "#0099cc",
                    opacity: 0.8
                }
            }
        }
    }]
});
</script>