I've bought a set of replica graphics, but have a original GM spoiler graphic. The vinyl pattern looks very different between the two types, with the spoiler graphic having a much more pronounced finish. The replicas are supposed to be on blackboard vinyl is this supposed to be smoother than the spoiler vinyl? You can just about see the difference in the picture below. Can anyone confirm please as I've booked someone to come and fit them and don't want to get it wrong.