using System.Collections;
using UnityEngine;

public class ColorChanger : MonoBehaviour
{
    [SerializeField]
    float timeDelay = .5f;

    [SerializeField]
    bool loop = false;

    [SerializeField]
    Color[] colors;

    private Renderer _renderer;

    void Start()
    {
        _renderer = gameObject.GetComponent<Renderer>();
        StartCoroutine(ChangeColor(timeDelay));        
    }

    IEnumerator ChangeColor(float delay)
    {
        _renderer.material.color = colors[Random.Range(0, colors.Length)];

        yield return new WaitForSeconds(delay);

        if(loop)
            StartCoroutine(ChangeColor(delay));
    }
}

var plaform =  Instantiate(thePlatform, transform.position, transform.rotation);

for (int i = 0; i < colors.Length; i++)
{
    plaform.GetComponent<Renderer>().material.color = colors[Random.Range(0, colors.Length)];
}