Ok better I think I think

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

public class funy : MonoBehaviour
{
    private bool hasGo;

    void Update()
    {
        if (!hasGo)
        {
            StartCoroutine(go());
        }
    }

    public IEnumerator go()
    {
        hasGo = true;
        yield return new WaitForSeconds(0.025f);
        GetComponent<MeshRenderer>().material.color = new Color(UnityEngine.Random.Range(0, 5), UnityEngine.Random.Range(0, 5), UnityEngine.Random.Range(0, 5), 100);
        hasGo = false;
    }
}
//put this script on every object in your unity scene. you will not regret it.

Ok better I think I think

Zweronz