Different Enemy Lives JavaScript

Currently I'm designing a game with 3 types of enemies 1 - Pink, 1 - Blue, 1 - Red. I have my player character shooting at the enemies and they are supposed to be destroyed if they are hit by the player's bullet. Currently this works, however, I want the Pink one to be destroyed after 1 shot, blue after 2 shots, red after 3 shots. In the game right now, if you shoot a blue enemy, a pink enemy is destroyed because the game is recognizing different enemies. So, what I'm asking is, how can I make it so that my game can differentiate between the different types of enemies and then, if a bullet hits JUST THAT SPECIFIC ENEMY, have that enemy's lives decrease/have it be destroyed. Also, I created 3 different enemy objects that are tied to different tags, but for some reason, the code that follows isn't recognizing that. It's recognizing that they are all the same GameObject and destroying them anyway. Here's the code I'm working with:

 var enemies : GameObject[];
 
 var pinkLives = 1;
 var blueLives = 2;
 var redLives = 3;
 
 var timesHit = 0;
 //var enemyArray = new Array();
 //enemyArray.length = 3;
 
 function Start () {
 
 }
 
 function Update () {
 
 }
 
 function OnTriggerEnter(collision:Collider) {
     if(GameObject.FindGameObjectWithTag("Enemy_Pink")) {
         if(collision.gameObject.tag == "Bullet") {
             pinkLives--;
             if(pinkLives == 0) {
                 Destroy(GameObject.Find("Enemy_Pink"));
             }
         }
     }
     if(GameObject.FindGameObjectWithTag("Enemy_Blue")) {
         if(collision.gameObject.tag == "Bullet") {
             blueLives--;
             if(blueLives == 0) {
                 Destroy(GameObject.Find("Enemy_Blue"));
             }
         }
     }
     if(GameObject.FindGameObjectWithTag("Enemy_Red")) {
         if(collision.gameObject.tag == "Bullet") {
             redLives--;
             if(redLives == 0) {
                 Destroy(GameObject.Find("Enemy_Red"));
             }
         }
     }
     Destroy(collision.gameObject);
 }