IndexOutOfRangeException: Array index is out of range.

Unity Engine
1

I keep getting this error message. Here is my code please tell me what i’m doing wrong. Here is my code :

#pragma strict
//Enemy Script

//Inspector Variables
var shapeColor : Color[];
var numberOfClicks : int = 2;
var respawnWaitTime : float = 2.0;
//Private Variables


//Update is called every frame
function Update () 
{
     if (numberOfClicks <= 0)
     {
     
	 	var position = Vector3 (Random.Range(-6,6),Random.Range(-4,4),0);//creates random position
	 	RespawnWaitTime();
        transform.position = position;  //moves game object to a new position
        numberOfClicks = 2;     
     }
}
//RespawnWaitTime is used to hide game object for a set amount of time and then unhide it.
function RespawnWaitTime ()
{
  renderer.enabled = false;
  RandomColor();
  yield WaitForSeconds (respawnWaitTime);
  renderer.enabled = true; 
}
//RandomColor used to changematerial of a game object.
function RandomColor ()
{
  var newColor = Random.Range(0, shapeColor.length);
  renderer.material.color = shapeColor[newColor]; 
}
2

Your array shapeColor is most likely empty and you need to populate it with some values