echarts柱状图宽度和颜色

series: [
    {
        name: '2011年',
        type: 'bar',
        data: [18203, 23489, 29034, 104970, 131744, 630230],
        barWidth:30,//宽度
        barGap:20,
        //每个图形颜色
        itemStyle: {
            normal: {
                color: function(params) {
                    var colorList = [
                        '#5e7e54','#e44f2f','#81b6b2','#eba422','#5e7e54',
                        '#e44f2f'
                    ];
                    return colorList[params.dataIndex]
                },

            }
        },
    },
]