Progress进度条如何实现渐变色？

Column({ space: 15 }) {
    Progress({ value: 0, total: 100, type: ProgressType.Ring })
      .value(80)
      .width(150)
      .color(new LinearGradient([{ color: "#3307dff", offset: 0.5 }, { color: "#FF00FF", offset: 1.0 }]))
      .style({
        strokeWidth: 10,
        scaleCount: 20,
        scaleWidth: 5,
        enableSmoothEffect: true
      })

  }.width('100%')
  .height("100%")
  .justifyContent(FlexAlign.Center)
}