Your work looks awesome so far. I personally wouldn't worry terribly about getting the exact blue/darkblue pattern that the new version of Cortana has. She is kind of a holograph and can pretty much change how she looks whenever she feels like it. Also, the wig pics aren't complete without you having the rest of the costume on as well!
Oh I'm not worried about it looking exact. But since I've already made the top half to fit her new look, I think it would be odd for the bottom half to look completely different. Plus I have other projects I'm working on, so there's no harm in waiting a little.
Lol yes I will post a picture with the wig and costume on. The weather has just been in the 100's for the past week, so wearing a body suit and wig wasn't exactly on my to-do list... lol