SVG Attributes

canvas.nodes([1, 2, 3, 4]).add({
    color: 'blue',
    svgattrs: {
        'stroke-width': 3,
        'stroke': 'lightblue'
    }
})

canvas.edges([[1, 2], [2, 3], [3, 4],
    [4, 1], [1, 3], [2, 4]]).add({ color: 'lightblue' })