HarmonyOS Image组件想给png设置颜色，文档让用colorFilter，但是没有示例说明4x5rgba矩阵

import drawing from '@ohos.graphics.drawing';  
import common2D from '@ohos.graphics.common2D';  
@Entry  
@Component  
struct ImageExample {  
  @State imageSrc: string = "https:\/\/img.ljcdn.com\/beike\/bk\/1645430577971.png";  
  translateColor(colorStr: string): common2D.Color {  
    let alpha0: number = parseInt(colorStr[1] + colorStr[2], 16);  
    let red0: number = parseInt(colorStr[3] + colorStr[4], 16);  
    let green0: number = parseInt(colorStr[5] + colorStr[6], 16);  
    let blue0: number = parseInt(colorStr[7] + colorStr[8], 16);  
    let color: common2D.Color = {  
      alpha: alpha0,  
      red: red0,  
      green: green0,  
      blue: blue0  
    }  
    return color;  
  }  
  @State DrawingColorFilter: ColorFilter | undefined =  
    drawing.ColorFilter.createBlendModeColorFilter(this.translateColor('#FF1A66FF'), drawing.BlendMode.SRC_ATOP);  
  build() {  
    Column() {  
      Image(this.imageSrc)  
        .width(100)  
        .height(100)  
      Image(this.imageSrc)  
        .width(100)  
        .height(100)  
        .colorFilter(this.DrawingColorFilter)  
    }  
  }  
}