Combat cyborgs whose eye implants color-code allies and enemies.
Imagine, between missions, you go to a local bar to unwind. It's the only place in town with motor oil on tap, which makes it a popular hangout spot for cyborgs. So there you are, chilling with a couple other cybergrunts. They're from another faction, but it's cool, you're all blue. Even civilians use "blue" as slang for being on the same side now, but they got it from your kind, and with you it's literal. Anyway, you're swapping stories, comparing battle scars, bonding over a shared hatred of crappy rations. One showed you a clip of her wife back home, the other told you about the ranch he's planning to buy, you're loosened up enough to take out your harmonica. The three of you are halfway through a bad but heartfelt karaoke session with the idoloid on TV when you feel the ping in your skull that means updated orders.
Somewhere miles away, a negotiation fell apart or an ultimatum wasn't heeded or someone got killed or one of your bosses got a better offer or any of a million other possible things. You might learn what happened later, if you live long enough. All you know now is that right before your augmented eyes, your drinking buddies change color from blue to red, and from the looks on their faces you know you're red too.
