折现颜色和legend的颜色不一致echarts 折线配置项内容和展示

我折现通过lineStyle定义了颜色， legend还是组件自动控制的颜色

      option = {
    title: {
        text: 'Awesome Chart'
    },
     tooltip: {
         
        trigger: 'axis'
    },
    legend:{
      data:[{name:"上限",textStyle:{color:'99FF99'}}]  
    },
    xAxis: {
        type:'value'
    },
    yAxis: {},
    series: [{
        name:"上限",
        type: 'line',
        lineStyle:{
            normal:{
                color:'#99FF99',
                width:6
            }
        },
        data:[[2,220], [4,182], [8,191], [16,234], [32,290], [64,330], [65,310]]
    },
    {
        name:'2017-01-01',
        type: 'line',
        data:[[2,231], [4,193], [8,291], [16,244], [32,310], [64,340], [65,330]]
    } ]
};