Overlaying texture always enabled?

Unity Engine
1

I am trying to make a fadeout/fadein scene change, but when I use the script I am using:

using UnityEngine;
using System.Collections;

public class SceneFade : MonoBehaviour
{
    public Texture2D fadeOutTexture; //Overlaying texture screen
    public float fadeSpeed = 0.8f; //Fade speed

    private int drawDepth = -1000; //Texture's order in heirarchy
    private float alpha = 1.0f; //Alpha from 0-1
    private int fadeDir = -1; //Direction to fade -1 in or 1 out

    void OnGUI()
    {
        alpha += fadeDir * fadeSpeed * Time.deltaTime; //Fade via direction and using time and speed to convert to framerate
        alpha = Mathf.Clamp01(alpha); //clamps number between 0 and 1, for GUI.color doesn't support negatives

        GUI.color = new Color (GUI.color.g, GUI.color.b, alpha); //Set alpha value
        GUI.depth = drawDepth; //Put rectangle on top
        GUI.DrawTexture (new Rect (0, 0, Screen.width, Screen.height), fadeOutTexture); //Trigger fade
    }

    public float BeginFade (int direction) //Sets whether scene should fade in or out
    {
        fadeDir = direction;
        return (fadeSpeed); //Return fadeSpeed to use
    }

    void OnLevelWasLoaded ()
    {
        BeginFade (-1); //Calls the function
    }
}

it draws the texture over the screen, so it is always black. I can’t seem to find a way to sneak in code to make it transparent until the scene begins to change without breaking how the code works. How could I achieve this?

2

You’re only passing 3 values to the Color constructor on line 18, which causes the alpha to be 1.