OK, I have rembrandt black pinstripe pants, the pinstripes not being all that predominate, but still noticable, just not as salient as pinstripes may b on other suits. I was thinking of wearing these pants with a plain black jacket (and of course a white shirt)...what do u reckon? is it ok to mix pinstripes with plain? or should i go and buy the very expensive matching jacket?its for the yr 12 formal, so does it really matter that much?