Echarts progress 设置背景颜色

<el-progress 
      type="circle" 
      :percentage="item.percent" 
      :color="item.color"
       :height="80"
       :width="80"
       :stroke-width="3"
       class="my-progress"
/>
.my-progress /deep/ path:first-child {
  stroke: #FAEFEB;
}