canvas filltext 怎么设置文字的颜色，fillStyle和stokeStyle试过都不行

@Entry 
@Component 
struct Index { 
  //用来配置CanvasRenderingContext2D对象的参数，包括是否开启抗锯齿，true表明开启抗锯齿。 
  private settings: RenderingContextSettings = new RenderingContextSettings(true) 
  //用来创建CanvasRenderingContext2D对象，通过在canvas中调用CanvasRenderingContext2D对象来绘制。 
  private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings) 
 
  build() { 
    Column() { 
      Canvas(this.context) 
        .width('100%') 
        .height('100%') 
        .backgroundColor('#F5DC62') 
        .onReady(() =>{ 
          //绘制填充类文本 
          this.context.font = '50px sans-serif'; 
          this.context.fillStyle = '#0AAAFF'; 
          this.context.fillText("Hello World!", 50, 100); 
          //绘制描边类文本 
          this.context.font = '55px sans-serif'; 
          this.context.fillStyle = '#AAAAFF'; 
          this.context.strokeText("Hello World!", 50, 150); 
        }) 
    } 
    .width('100%') 
    .height('100%') 
    .padding({left:20}) 
  } 
}