Error in color code .. HTML5 Canvas

this.stop();
function color1() {
var myColor: ColorTransform = new ColorTransform;
this.brush.mainbrush.transform.colorTransform = myColor;
this.myColor.color = "#000000";
}
this.brush.addEventListener("click", brushmc.bind(this));
function brushmc() {
this.brush.startDrag(true, new Rectangle(W: 550, H: 400));
}
this.Green.addEventListener("click", Greencolor.bind(this));
function Greencolor() {

this.brush.main.transform.colorTransform = myColor;
this.myColor.color = "#006600";
}
this.Yellow.addEventListener("click", Yellowcolor.bind(this));
function Yellowcolor() {

this.brush.main.transform.colorTransform = myColor;
this.myColor.color = "#FFFF00";
}
this.box.addEventListener("click", boxcolor.bind(this));
function boxcolor() {
if ((this.brush.main.transform.colorTransform = "#FFFF00")) {
  this.good.visible = true;
  this.good.play();
  this.box.transform.colorTransform = "#FFFF00";
} else {
  this.good.visible = false;
  this.wrong.alpha = 1;
  this.box.transform.colorTransform = "#FFFFFF";
}

https://drive.google.com/file/d/1jH-YszEE2yHEG7pAvJY6ZkZH4iImW9sA/view?usp=sharing