...red vs. yellow...

I am in the possession of the latest 'Seinfeld' special edition box set, which is really cool. But, the set contains a salt and pepper shaker set formed as the mustard/ketchup/napkin holder from Monk's...And this is where the dilemma starts...Which one is for salt and which for pepper? They are equally shaped and have the same number of holes...Therefore, is red black, i.e. pepper, and yellow white, i.e. salt? Red is after all the darkest of the two colors...So, if you where at my house dear reader(s), would you reach for the yellow one if you wanted salt, or the red one? I cannot rest until this great debate has been finalized...