I don't think there was one because the fella said 'my wife is faithful to me and even if she wasn't a mixed baby still wouldn't look like this.." or something like that. But even so lol..
I guess unless they know a detailed history of their families it's possible its the genetic thing of previous white genes. Also I saw a video where they said they haven't out-ruled the albino possibility, they were told she isn't but apparently it could just be a less intense case. Wow I feel like I've talked about this too much, if the expert in genetics is stumped I don't know why I'm trying.. haha..