As for me, I'm going to don my Irish National AND the Saffron Fly Plaid (that's right, - I'm actually going to defy the Kilt Police by mix 'n Match!!!)
I routinely wear my saffron kilt & flashes with my rifle green caubeen, brat, and hose. While I've answered a lot of questions, no one's ever said a cross word, much less issued me a citation.