Update: after 24 hours and looking at it in the sunlight a few times I pulled the stripe off the car. It just wasn't quite the right red in the sun, a little too bright for my tastes and enough "off" from the centre caps to be annoying. (ok, yeah...maybe I'm picky...lol). If it was a deeper shade of red, I'd probably like it, guess I'll keep my eyes peeled for a different pinstripe vinyl.
I'll leave the pics up for anyone who was thinking about doing one. It would probably look a lot better on a white or black vehicle. The Gravity Grey is also just a little bit of the wrong shade with this particular colour vinyl and it had a slight clash that was bugging me.