You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
I think the ones you get in their original/campaign mode colors are preset. I didn't get Arcee because I hadn't unlocked her yet when I primed. I don't think there's a way to control it. I'm not even sure if all three characters for each class get a unique original color scheme.
I feel my blood rushing through my body. Yes, this is it. The feeling - it's coming back to me: the sensation of killing.