Hello,
I try to change the color of a material of a Skeleton but I can’t.
Here the Skeleton GameObject :

I tryed this, it’s work well on ohter GameObject but not with Spine skeleton
gameObject.renderer.material.color = Color.red;
gameObject.renderer.materials [0].color = Color.red;
gameObject.GetComponent<MeshRenderer> ().material.color = Color.blue;
gameObject.GetComponent<MeshRenderer> ().material.SetColor ("_TintColor", Color.blue);
gameObject.GetComponent<MeshRenderer> ().material.SetColor ("_Color", Color.blue);