script to change material, stop working after a time

Unity Engine
1

Hi,
I made a very basic script to change player mnaterial with wall materila when it is trigger:

public class TakeColor : MonoBehaviour {

    Renderer skin;
    Material defaultMaterial;
    // Use this for initialization
    void Start () {
        skin = GetComponent<Renderer>();
        this.defaultMaterial = skin.material;
    }
   
    // Update is called once per frame
    void Update () {
       
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.name != "Floor" && other.name != "Cameleon PlaceHolder")
                   StartCoroutine(ChangeColor( (other.gameObject.GetComponent<Renderer>()).material));
    }

    private void OnTriggerExit(Collider other)
    {
        if (other.name != "Floor" && other.name != "Cameleon PlaceHolder")
            StartCoroutine(ChangeColor( defaultMaterial));
    }


    private IEnumerator ChangeColor( Material newItem)
    {
        skin.material = newItem;
        yield return new WaitForSeconds(1f);
       
    }

}

as you can see not a rocket sience and yet after few material change it stop doing it job.
some one knows why?

2

Tried to reproduce this error in my Unity with no wrong results.
Material color changes with no problems.

Can you give more details?

3

thx for response.
I will do even more, here is video on YT:

changed script in coment.

4

I find answer, kind of… the event exit start even if i didn’t exit this colider.
I find walk around here:

I change rigedbody to kinematic.