Alright, you know-it-all. So why does she have one blue eye and one of a different color?
My guess is that it's because of the white spotting gene. This gene can affect the eyes, causing a lack of melanin which results in a blue eye. This kitty also has white spots on her chest which suggests that the piebald gene is at play here. It's likely that this gene is affecting each eye differently, resulting in one being a normal color and the other being blue due to a lack of pigment.