What colour is your car? I have the full kit on mine and my car is white so it's quite a contrast.
Havn't had any negative feedback so far from other people (ie chav), most people don't really notice unless they are enthusiasts so I would say just go for it.
No sure how easy the vinly strip is to fit though yourself, I had mine done at the dealer and they reckon the side strip and rear diffuser were the most tricky parts to fit (I guess the side strip is maybe difficult to line up all the way along the bottom).
Here's a link to my album so you can see mine (just figured out you can make an album):
http://f30.bimmerpost.com/forums/alb...?albumid=10547
Dannywooly77 black looks great by the way!