yes as long as the order has not been pulled you van change anything you want and it will not affect anything just make sure to get the new paperwork to reflect the change.
i Just talked to my guy abou tchanging to the bright machined ones. He is going to check when he gets into the office tomorrow. The order went in already so Ill find out for sure either tommorrow or early next week. I will let you know when I find out for sure. I dont see why there would be a problem with it though as long as the order hasnt been pulled yet.
Have the dealer change it via the online system. i ordered mine with the saddle interior. I lost sleep for 2 -3 weeks because I really wanted the updgraded red leather interior. The dealer changed it online!