Random.Range doesn't work

Hello!

I make a game where you control a spaceship and as you move, planets are appearing. But when they Instantiate, they look like they have self-illumin material. This happens because the script that I use exept of keeping the r & g variables between 0-255 as to make a color combination, it makes them to >2000.

 #pragma strict
 var Earth : GameObject;
 
 function Update () {
 var n : int = Random.Range(0,1000);
 var r : int = Random.Range(0,255);
 var g : int = Random.Range(0,255);
 if(n == 1)
 {
     var planet = Instantiate(Earth, transform.position, transform.rotation);
     planet.renderer.material.color = Color(r, g, 0, 0);
 }
 }