// Changes the color of the LensFlare (on a gray scale) from black to white.
// More white when tr gets near the LensFlare, and darker when the transform goes away.
// Remember that the color works on elements that have adlight color enabled.

var lf : LensFlare;
var tr : Transform;

function Update() {
    var percentage : float = 1/Vector3.Distance(lf.transform.position, tr.position);
    lf.color = Color(percentage, percentage, percentage);
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    public LensFlare lf;
    public Transform tr;
    void Update() {
        float percentage = 1 / Vector3.Distance(lf.transform.position, tr.position);
        lf.color = new Color(percentage, percentage, percentage);
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    public lf as LensFlare

    public tr as Transform

    def Update():
        percentage as single = (1 / Vector3.Distance(lf.transform.position, tr.position))
        lf.color = Color(percentage, percentage, percentage)