Here's the article/study. Read all the way to the end...its interesting to learn that the fish preferred an unscented blue lure over a scented pink lure...even though the fish otherwise preferred scented lures over unscented ones of the same color.
I know...there's no statistical evaluation of the raw data. Statistically speaking, there may be no significant difference in fish preference between certain colors. And any experiment needs to be repeated and corroborated before being accepted as true. But blue DID seem the overwhelming favorite. Enough said. :)