What is a30 eye color?

As an AI language model, I cannot provide information about a specific "a30 eye color" as it is not a recognized terminology or genetic classification. Eye color is determined by the amount and type of melanin pigment in the iris of the eye. Most common eye colors include brown, blue, green, and gray, which are believed to be influenced by genetics and environmental factors. Eye color can also change over time due to various factors including age, disease, and injury.