Fade script working but I can't 'see' it working? (Solved)

Sorry for the cryptic title, but its actually quite accurate.

Searching the forums I've found this script that should fade-in and fade-out once my scene starts. I'm using unity5 which auto corrected the scripts and I'm getting no compiler errors.

If I play the game in window mode I can watch the inspector and things appear to be happening as they should - I can see the 'faded' variable changing from false - true. I can even see the alpha scale of the GUITexture decreasing and then increasing.

However on the screen (in-game) there is no visual representation of this. I mean nada.. no blackness, no colour change... nothing.

I see all the appropriate Debug and printed messages, so I'm assuming the script is working correctly?

 using UnityEngine;
 using System.Collections;
 
 public class CollideAndFade : MonoBehaviour
 {
     public float fadeSpeed = 1.5f;    // Speed that the screen fades to and from black.
 
     private bool sceneStarting = true;    // Whether or not the scene is still fading in.
 
     public bool Faded;
     
     private bool fadeNow;
 
         
     void Awake()
     {
         // Set the texture so that it is the the size of the screen and covers it.
         GetComponent<GUITexture>().pixelInset = new Rect(0f, 0f, Screen.width, Screen.height);
 
         Faded = false;
 
         fadeNow = false;
     }
     
 
     void Update()
     {
         if(sceneStarting == true) // If the scene is starting...
         {
             StartScene(); // ... call the StartScene function.
         }
 
         if(fadeNow)
         {
             EndScene();
         }
     }
     
     
     void FadeToClear()
     {
         // Lerp the colour of the texture between itself and transparent.
         GetComponent<GUITexture>().color = Color.Lerp(GetComponent<GUITexture>().color, Color.clear, fadeSpeed * Time.deltaTime);
         print ("I'm running!");
     }
         
         
     void FadeToBlack()
     {
         // Lerp the colour of the texture between itself and black.
         GetComponent<GUITexture>().color = Color.Lerp(GetComponent<GUITexture>().color, Color.black, fadeSpeed * Time.deltaTime);
     }
     
     
     void StartScene()
     {
         // Fade the texture to clear.
         FadeToClear();
         
         // If the texture is almost clear...
         if(GetComponent<GUITexture>().color.a <= 0.05f && sceneStarting)
         {
             // ... set the colour to clear and disable the GUITexture.
             GetComponent<GUITexture>().color = Color.clear;
             GetComponent<GUITexture>().enabled = false;
             Faded = true;
             Debug.Log("True");
             
             // The scene is no longer starting.
             sceneStarting = false;
         }
         if(!sceneStarting)
         {
             fadeNow = true;
         }
     }
     
     
     void EndScene()
     {
         if (Faded == true)
         {
             // Make sure the texture is enabled.
             GetComponent<GUITexture>().enabled = true;
 
             // Start fading towards black.
             FadeToBlack();
             
             // If the screen is almost black...
             if(GetComponent<GUITexture>().color.a >= 0.95f)
             // ... reload the level.
             Application.LoadLevel(2);
         }
     }
 }
 
 

I'm thinking its something to do with my GUITexture (maybe pixel inset) I've not used this before so its a good chance that's where I'm being a noob.

I've tried a few variations for the X Y W H fields but nothing changed. The texture I'm using is a simple 32x32 black square.(Texture type : Texture)

What am I doing wrong please guys ???