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Wikipedia!
Actually, the study cited by Wikipedia used 6 different SNPs to predict eye color with 90% accuracy. So, minimum of 6, possibly more to account for the other 10%.
There are at least six genes that control eye color, not counting recombination changes that occur during meiosis and early mitosis. It's quite possible for two blue-eyed parents to produce a brown-eyed child.
Now, if both your parents are blood type O- and you're AB+, then I'd start asking...