It looks to me that the Space Gray version does already have a black face. http://www.apple.com/iphone-5s/specs/
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
Yes, there's no "white space grey".
There's one that is Gold with a white face.
One that is Silver with a white face.
And one that is "Space Grey" with a black face.
If you ordered the wrong color, you probably can't change it at this point. You would need to cancel your order (if that option exists) and place a new order.
Or return the device once you get it and place a new order.
I made the exact same mistake ! I wanted Space Grey but I ordered silver. What you have to do is call in and cancel the original order then place a new order. Of course this will put you back on the end of the line. My original shipping date was 10/7, now I'm pushed back to 10/21 (unless some nice VZW person wants to bump me up in line). I'm sad but its my own fault for not understanding Apple's bad color naming !!!