script communicate with each other

I have a problem. The purpose of my game is to click on these objects falling at random. You need to click only when the object has the texture red. I had to make two separate scripts. The first script is connected to the main room and is used to create random objects falling down:

Code:
var speed : int = 2;

var chrismasBall : GameObject;

var instanza;

var finds : GameObject;

function Start () {

StartCoroutine(Creation(1));

//GameObject.Find("pSphere1").GetComponent("NewBehaviourScript").texBall==[4];

//cerca funzione "textureRandom" in un'altro script

//gameObject.Find("sferacolore").SendMessage("textureRandom");

}

function Update () {

Physics.gravity = Vector3(0, -0.05, 0);

finds = GameObject.Find("pSphere1").GetComponent("NewBehaviourScript").texBall[5];

}

function Creation(tempo){

while(true){

    instanza = Instantiate (chrismasBall, transform.position, Quaternion.identity);

  

   

   

  instanza.AddComponent(Rigidbody);

  // instanza.rigidbody.mass = 0.1; 

   //instanza.rigidbody.velocity = Vector3(0,1*Time.deltaTime*speed,0);

   //instanza.transform.Translate(0,-1,0);

   

   instanza.transform.position.x = Random.Range(2,-2);

   instanza.transform.position.y = 2;

   instanza.transform.position.z = 0.2;

   instanza.transform.Translate(0, Time.deltaTime, 0);

   //instanza.transform.position.y = 12;

   //

   //Destroy(instanza, 3);

   

   yield WaitForSeconds(tempo);

   

   

   

}

}

/*function OnMouseDown(){

if(renderer.material.mainTexture == finds[5]){

print("cliccato!");

}

}*/

The second script is attached to objects and is used to randomly change the texture of the object. For textures I used array but I have to call it in the script attached to the camera so that I recognize what object I clicked. Here is the second script. How can I do? thanks

Code:
var texBall : Texture[] = new Texture [5];

function Start(){

textureRandom();

}

function textureRandom(){

while(true){

 yield WaitForSeconds(1); //aspetto 1 secondo e cambio colore alla mesh

 

 var randomtex; // variabile randomColor

 

 randomtex = texBall[Random.Range(0, texBall.length)]; //random della variabile cambiaColore

 

   

renderer.material.mainTexture= randomtex; // lo assegno alla variabile randomColor

}

}