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The stroke of the label.

<div id="sankey" style="width: 500px; height: 200px;"></div>
<script>
    $("#sankey").kendoSankey({
        data: {
            nodes: [
                { 
                    id: 1, 
                    label: { 
                        text: "Stroked Label",
                        stroke: {
                            color: "#ff6358",
                            width: 2,
                            lineJoin: "round"
                        }
                    } 
                },
                { id: 2, label: { text: "Target Node" } }
            ],
            links: [
                { sourceId: 1, targetId: 2, value: 10 }
            ]
        }
    });
</script>

The color of the stroke.

<div id="sankey" style="width: 500px; height: 200px;"></div>
<script>
    $("#sankey").kendoSankey({
        data: {
            nodes: [
                { 
                    id: 1, 
                    label: { 
                        text: "Stroke Color",
                        stroke: {
                            color: "#28b4c8",
                            width: 2
                        }
                    } 
                },
                { id: 2, label: { text: "Target Node" } }
            ],
            links: [
                { sourceId: 1, targetId: 2, value: 10 }
            ]
        }
    });
</script>

The line join of the stroke.

Default: "round"

<div id="sankey" style="width: 500px; height: 200px;"></div>
<script>
    $("#sankey").kendoSankey({
        data: {
            nodes: [
                { 
                    id: 1, 
                    label: { 
                        text: "Line Join",
                        stroke: {
                            color: "#ff6358",
                            width: 3,
                            lineJoin: "miter"
                        }
                    } 
                },
                { id: 2, label: { text: "Target Node" } }
            ],
            links: [
                { sourceId: 1, targetId: 2, value: 10 }
            ]
        }
    });
</script>

The width of the stroke.

Default: 1

<div id="sankey" style="width: 500px; height: 200px;"></div>
<script>
    $("#sankey").kendoSankey({
        data: {
            nodes: [
                { 
                    id: 1, 
                    label: { 
                        text: "Stroke Width",
                        stroke: {
                            color: "#ff6358",
                            width: 4
                        }
                    } 
                },
                { id: 2, label: { text: "Target Node" } }
            ],
            links: [
                { sourceId: 1, targetId: 2, value: 10 }
            ]
        }
    });
</script>