sked/Assets/Script/Character/MaterialChanged.cs

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

public class MaterialChanged : MonoBehaviour
{
    public Renderer mesh;
    public Material matOrigin;
    public Material matChanged;

    private void Start()
    {
        Changed();
    }

    public void Changed()
    {
        if (matOrigin)
            matOrigin = mesh.material;

        mesh.material = matChanged;
    }
}