You're right. Pinstripes are old school, but if you're a fan, I say do whatever makes you happy.
What color is your MKC and what color pinstripes are you considering?
By the way, many of us are creating a signature that shows what kind of MKC we bought - interior/exterior color, FWD vs AWD, 2.0 vs 2.3, Equipment package, other packages/add-ons, and build date. It helps when people discuss problems to know whether or not you have a similar MKC that was built around the same time. If you want to do this, click on your screen name, then on 'About Me' and add your "vitals" in the signature area.
Hope you enjoy the forum and have many miles of carefree MKC driving!