如何在android中设置可绘制的绘画颜色和背景？

下面是我的布局文件的片段： 布局图_1，带背面和e9e9e9

但是布局背景会影响底部背景，底部背景也会影响顶部背景

如何确保它们以正确的RGB颜色显示，我应该如何处理RGBA的alpha值？ 我已经尝试将颜色设置为0xe2f5ff，alpha值为1，但我认为布局背景仍然对底色有影响

circlePaint.setColor(Color.parseColor("#00FFFFFF"));

其中，前2位表示Alpha。00至FF

public class NodeDrawable extends Drawable {

  //...

  protected ShapeDrawable shapeDrawableBottom;
  protected ShapeDrawable shapeDrawableTop;

  @Override
  public void draw(Canvas canvas) {
          Paint circlePaint = shapeDrawableBottom.getPaint();
          circlePaint.setColor(DEFAULT_COLOR_BOTTOM);//DEFAULT_COLOR_BOTTOM = 0xe2f5ff
          circlePaint.setFlags(Paint.ANTI_ALIAS_FLAG);
          shapeDrawableBottom.setBounds();
          shapeDrawableBottom.draw(canvas);

          Paint circlePaint = shapeDrawableTop.getPaint();
          circlePaint.setColor(DEFAULT_COLOR_TOP);//DEFAULT_COLOR_TOP = 0x1f8fd2
          circlePaint.setFlags(Paint.ANTI_ALIAS_FLAG);
          shapeDrawableBottom.setBounds();
          shapeDrawableTop.draw(canvas);
  }

  //...
}


public class CustomView extends View {

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        buildDrawables();
    }

    private void buildDrawables() {
        mCustomDrawable = new CustomDrawable();
    }

}

circlePaint.setColor(Color.parseColor("#00FFFFFF"));