GUITexture

//GUI텍스처에 택스쳐를 지정한다.
var someTexture : Texture2D;
guiTexture.texture = someTexture;

 //텍스쳐의 색을 바꾼다.
guiTexture.color = Color.green;


transform.position = Vector3.zero;
transform.localScale = Vector3.zero;
guiTexture.pixelInset = Rect (50, 50, 100, 100);