[]graphics颜色填充fillColor问题

//初始化LayaAIR环境

Laya.init(1000, 800);



//创建精灵

var sp:Sprite = new Sprite();

//创建渐变

var gradient=Browser.context.createLinearGradient(0,0,80,0);

gradient.addColorStop(0,"white");

gradient.addColorStop(1,"red");            

sp.graphics.drawRect(0, 0, 150, 150, gradient);

sp.graphics.loadImage("res/colorpicker_overlay.png",0,0);

//添加到舞台

Laya.stage.addChild(sp);