Cycle UI Label Color through color spectrum?

[yaezah]

I'm trying to change the .lb.color to cycle through the color spectrum . I have a UILabel in project that instantiates as a score (+20), when an enemy is killed.. here's the script I added to that gameobject:

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class changecolor : MonoBehaviour
5. {
6.     public UILabel _lb;
7.  
8.     public Color32[] colors;
9.  
10.     public int currentIndex = 0;
11.     private int nextIndex;
12.  
13.     public float changeColourTime = 2.0f;
14.  
15.     private float lastChange = 0.0f;
16.     private float timer = 0.0f;
17.  
18.     void Start()
19.     {
20.         if (colors == null || colors.Length < 2)
21.             Debug.Log("Need to setup colors array in inspector");
22.  
23.         nextIndex = (currentIndex + 1) % colors.Length;
24.     }
25.  
26.     void Update()
27.     {
28.  
29.         timer += Time.deltaTime;
30.  
31.         if (timer > changeColourTime)
32.         {
33.             currentIndex = (currentIndex + 1) % colors.Length;
34.             nextIndex = (currentIndex + 1) % colors.Length;
35.             timer = 0.0f;
36.  
37.         }
38.      
39.         _lb.color = Color32.Lerp(colors[currentIndex], colors[nextIndex], timer / changeColourTime);
40.     }
41. }

But it doesn't do anything, it actually makes the text disappear.


EDIT: After reading through posts regarding UI Label colors , it's fixed .

I kept reading about how I'm suppose to only use Color32 and I changed the _lb.color = Color.Lerp to _lb.color = Color32.Lerp and the text disappeared, but then I realized I didn't change the array of colors up top to Color32. Now it works like a charm. Code is edited to fixed code if anyone wants to use it , just make sure to set your colors again in inspector because changing from color to color32 changes them to pink for some reason.. it makes a great rainbow effect for text.