var chart = c3.generate({
    data: {
        columns: [
            ['data1', 30, 200, 100, 400, 150, 250],
            ['data2', 50, 20, 10, 40, 15, 25],
            ['data3', 130, 220, 140, 200, 250, 450],
            ['data4', 250, 320, 210, 240, 215, 225],
            ['data5', 430, 500, 400, 280, 290, 350],
            ['data6', 100, 120, 310, 340, 415, 225]
        ]
    },
    color: {
        pattern: ['#1f77b4', '#aec7e8', '#ff7f0e', '#ffbb78', '#2ca02c', '#98df8a', '#d62728', '#ff9896', '#9467bd', '#c5b0d5', '#8c564b', '#c49c94', '#e377c2', '#f7b6d2', '#7f7f7f', '#c7c7c7', '#bcbd22', '#dbdb8d', '#17becf', '#9edae5']
    }
});