var docRef = app.activeDocument
var myText3 = docRef.textFrames.add()
myText3.contents = "��Ҫ�ԌW�W(w��ng)666"
myText3.left = 100
myText3.top = 100



for (var i = 0; i < myText3.characters.length; i++) {
    var myColor = new CMYKColor()
    myColor.cyan = Math.random()*100;
    myColor.magenta = Math.random()*100;
    myColor.yellow = Math.random()*100;
    myColor.black = Math.random()*100;

    myText3.characters[i].characterAttributes.size = 200
    myText3.characters[i].characterAttributes.fillColor = myColor
}