var rc = reuqire('random-color');
var shapes = reuqire('shapes');

var ShapeEventEmitter = shapes.ShapeEventEmitter;
var Circle = shapes.Circle;

var canvas  =  document.getElementById('c');
var ctx = canvas.getContext('2d');

var myShape = new Circle([200,200],50);

var myShapeEmitter = new ShapeEventEmitter(myShape,canvas);

myShape.stroke(ctx);

myShapeEmitter.on("click",function(){
  ctx.fillStyle = rc(); //get a random color
  myShape.fill(ctx);
});