private void ChangeMaterial(SongPlayer controller, Material newMat) { Renderer[] children; children = controller.GetComponentsInChildren <Renderer>(); foreach (Renderer rend in children) { var mats = new Material[rend.materials.Length]; for (var j = 0; j < rend.materials.Length; j++) { mats[j] = newMat; } rend.materials = mats; } }