touch and destroy clone object with specific color

Hello all, i have big problem and i try to solve it 2 days.. try with timers different ways but nothing.. my brain stuck...

here is my code

 void FixedUpdate () {
         random = boxGenerator.randomColor;
     RaycastHit hit = new RaycastHit();
             for (int i = 0; i < Input.touchCount; ++i) {
                 if (Input.GetTouch(i).phase.Equals(TouchPhase.Ended)) {
                     // Construct a ray from the current touch coordinates
                     Ray ray = Camera.main.ScreenPointToRay(Input.GetTouch(i).position);
                     if (Physics.Raycast(ray, out hit)) {
                         if(gameObject.GetComponentInChildren<Renderer>().material.color == colors[random])
                         {
                             Destroy (this.gameObject);
                             scoreScript.increaseScore(score);
                             Debug.Log("Pathsa " + gameObject.GetComponentInChildren<Renderer>().material.color + " enw " + colors[boxGenerator.randomColor]);
                             boxGenerator.randomGenerator();
                             Time.timeScale = 1;
                         }
                         else
                         {
                             scoreScript.gameOver();
                             Destroy (this.gameObject);
                             missionTextScript.gameOver();
                             gameOverMenuScript.gameOverEnabled = true;
                             Time.timeScale = 0;
                         }
                     }
                 }
             }
 }

my game generate a random color and you have to touch a box with the specific color.

when i touch the corect object the game show game over screen ! like i touch wrong object....

i saw that when i press 1 object all with same color destroyed so i think if something is wrong with instatiate and clones...

must to add the prefab and not the clone?

thanks