CreateJS の API：beginLinearGradientStroke

/*beginLinearGradientStroke() API
*/

var shape =  new createjs.Shape(new createjs.Graphics().beginLinearGradientStroke(["#fff", "rgba(50, 50, 50, 1)"], [0, .4], 0, 0, 70, 140).moveTo(5, 25).lineTo(110, 25).endStroke());
this.addChild(shape);