When Meredith was a kid she would do the same thing with cereal bowls that you do with vitamins! We had these melamine bowls that were white, pink and brown. Pink was the best -- if she got a pink one, she'd expect a very good day. White was in the middle -- that meant an "okay" day, not great but not awful. Brown was the bad color -- if she got a brown bowl, she was unhappy because it meant she would have a terrible day. At least occasionally it became a self-fulfilling prophecy.

She grew out of that, but she does still get children's chewable vitamins rather than taking vitamin pills -- and gets her calcium from Viactiv for the same reason!