Change to transparent/fade/opaque

using System;
using System.Collections.Generic;
using UnityEngine;

public static class MaterialUtility
{
    public static void SetAlpha(this Material m, float newAlpha)
    {
        var color = m.GetColor("_Color");
        color.a = newAlpha;
        m.SetColor("_Color", color);
    }

    public static void ChangeMaterialToTransparent(this Material material)
    {
        ChangeMaterialToTransparent(material, (int)UnityEngine.Rendering.RenderQueue.Transparent);
    }

    public static void ChangeMaterialToTransparent(this Material material, int renderQueue)
    {
        material.SetInt("_Mode", 3);
        //material.SetOverrideTag("RenderType", "Transparent");
        material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
        material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
        material.SetInt("_ZWrite", 0);
        material.DisableKeyword("_ALPHATEST_ON");
        material.DisableKeyword("_ALPHABLEND_ON");
        material.EnableKeyword("_ALPHAPREMULTIPLY_ON");
        material.renderQueue = renderQueue;
    }

    public static void ChangeMaterialToFade(this Material material)
    {
        ChangeMaterialToFade(material, (int)UnityEngine.Rendering.RenderQueue.Transparent);
    }

    public static void ChangeMaterialToFade(this Material material, int renderQueue)
    {
        material.SetInt("_Mode", 2);
        //material.SetOverrideTag("RenderType", "Transparent");
        material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);
        material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
        material.SetInt("_ZWrite", 0);
        material.DisableKeyword("_ALPHATEST_ON");
        material.EnableKeyword("_ALPHABLEND_ON");
        material.DisableKeyword("_ALPHAPREMULTIPLY_ON");
        material.renderQueue = renderQueue;
    }

    public static void ChangeMaterialToOpaque(this Material material)
    {
        ChangeMaterialToOpaque(material, (int)UnityEngine.Rendering.RenderQueue.Geometry);
    }

    public static void ChangeMaterialToOpaque(this Material material, int renderQueue)
    {
        material.SetInt("_Mode", 0);
        //material.SetOverrideTag("RenderType", "Opaque");
        material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);
        material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
        material.SetInt("_ZWrite", 1);
        material.DisableKeyword("_ALPHATEST_ON");
        material.DisableKeyword("_ALPHABLEND_ON");
        material.EnableKeyword("_ALPHAPREMULTIPLY_ON");
        material.renderQueue = renderQueue;
    }
}