Blue Chick Found in Black Broiler Pen

The Black Broiler wasn't intentional, but I needed to pick a fourth chick today and didn't want any Sex Links or Cornish crosses. I happened to pass by the Black Broiler pen and my eye caught this little oddball in a sea of black chicks. She appears to be blue (at least compared to all the other Black Broilers) and I couldn't resist. Any opinions if this little one is really a Black Broiler or did I stumble across something else? I can't find much information here or online about Black Broilers.

Thanks. She is definitely a looker with a personality to match. She runs at the chance to climb into my hand when ever I reach into their brooder. This is what resulted...

Something I should also note that I found odd is she (now named Tallulah) has black skin all over. I'm been doing some reading and apparently only silkies and a few other rare breeds have this trait. I'm so confused  LOL

Thank you for the compliments everyone, she sure is a looker. She reminds me of a baby eagle while the hubby calls her Happy Feet! 

I'm not definite if the feed store we bought her at breeds their own stock entirely, but they do have plenty of breeding pens set up and many of their "not for sale, breeding only" pens were filled with Silkies of every color imaginable. I'm curious to find the genetic outcomes of Silkie crosses to determine how many generations it would take (if possible) to have an absence of a fifth toe and leg feathering. Having only online pictures to compare, she does strikingly resemble a blue Silkie chick minus those particular features.

I considered a Blue Sumatra which she also closely resembles except that all the reference pictures to blue chicks show significant facial mask markings and white wing tips. However, seeing how Sumatras have erect tail feathers, it could explain why Tallulah has such a prominent pointed tail compared to the other three chicks (BO, RIR, BR) who have very rounded fluffy rumps. 

@dretd: Thank you for the photo compliments. From 2008-2011 I ran a rattery (breeding and showing pedigreed rats, not reptile food) and learned the secrets on how to get clear close ups. The key ingredient is lot's of patience and assuming what their next move will be. Baby chicks are nothing compared to 3 week old rats in the midst of their popcorning stage! I do also highly recommend the Samsung TL205 for it's smart feature and fast shutter speed. I used to have an Olympus model that just didn't cut it before I tested out new cameras. If you're in the market for a new camera, try Walmart. Best Buy takes a restocking fee out of your refund or exchange, but Walmart has a full money back guarantee for 30 days, so I tried a new camera every month until I found the one I have now.