Just wondering how it looks.
The dealer is putting on the pinstripe and tempted to go without, but the blue does look a bit plain and a reflective stripe should enhance it a bit.
I usually pinstripe my own vehicles. I professionally pinstripe vehicles as a side hobby and I do it with One Shot paint and Mak brushes. This vehicle is a tough one. I have studied it for hours and still mine is a blank canvas. The pics posted only back up as to why I have not done it. I may do a little Von Dutch style on the back at some point but it would need to be minimal otherwise YUCK!
IMHO, bag the pinstripes for a while and decide later if you really want them. Dealer will really push for the extra $$, but the car's SS window trim already does what the pinstripe is intended to do. In the end, it's YOPUR decision. Take care!