The CFA recognizes fourty-two registered breeds of show cats. Most of these cats can have blue eyes, which is somewhat surprising since blue-eyed cats seem rare. While all kittens are born with blue eyes, as the kitten grows up it's eyes usually change color.
Blue-eyed cats are becoming more popular in recent years, which has caused some breeders, like Blue Eyes Cattery, to specialize in breeding and selling cats with blue eyes.
Most white cats with blue eyes, like Finny, are deaf. Blue eyes, especially in white cats, is associated with albinism Tips-for-cats.com explains that "Blue eyes are caused by forms of albinism that lead to a lack of pigmentation in both the coat and the iris, and occur in cats with white coats. Blue-eyed white cats are often deaf as well."
This does not seem to be the case with Finnegan, who will run across the house after hearing his name, hearing the door open, or hearing the words "treat" or "dinner."