I'm pretty sure a blue eyed wolf is nonexistant, unless it's a puppy, but a puppy's eyes change over time. " If you see a wolf with blue eyes then he or she is likely a wolf-hybrid and not a full-blooded wolf."
Anyway, realism. I suppose, by most Feral-Heart standards, realism is any color eyes except red, purple, and pink, any markings, as long as they're realistically colored, and any mane of any color. What really gets me, on realism, though, is the backstories. Stories and personality are part of realism too. I hate the unrealistic "was lab tested on" in roleplays that claim to be realistic. I've had my share of lab tested characters and I still have one, but do you really think an animal would be able to escape from a top-security lab with hundreds of scientists? The only reason mine did was because another one was too strong and too violent; they had made him that way on accident. He rampaged and she bought the time to escape. Another backstory that gets me is the "her friend died in a fire," "her parents drowned," etc.. This is because don't you think the pup would have really huge fears of fire or water because her parents were killed? Not to mention the trauma they go through when they see fire/water. People just don't think things clearly through.