[Spine2D] How to change the color of material of a skeleton object c-sharp

Hello,

I try to change the color of a material of a Skeleton but I can’t.

Here the Skeleton GameObject :

alt text

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);

var mySkeletonAnimation = GetComponent();
mySkeletonAnimation.skeleton.SetColor(Color.red);