The sounds that the machine makes are also cued to the Halo world. For instance, when you press the disc eject button, you hear the sound of the Spartan characters energy shields charging up music to the ears of any Halo player.
http://www.wired.com/gamelife/2010/07/halo-reach-xbox-360/#ixzz0uTGo6bqV
http://www.wired.com/images_blogs/g...60_Limited_Edition_Halo_Reach_Bundle-copy.jpg
Also two tone paint job