To be sure @Caimheul1313 , I get that the rule is the rule. It's not ambiguous and I understand it.
Here are my objections:
1. To declare or suggest that Legion is as open to customization as other games (it's not).
2. (on the heels of #1), it's disingenuous to make that claim when there are precisely ZERO extra bits, or upgrade kits/bits, etc with which to do any meaningful conversion work.
3. To suggest that obvious color differences aren't as noticeable and obvious as physical model differences. If anything they are probably more noticeable. I'm not talking about the "brim of this trooper's cap is a different color of that trooper's cap" (which is what I do to differentiate between my basic trooper squads. I'm talking about OBVIOUS (can be seen from 4' away) differences.
I get I'm like the lone voice here advocating for that. But this game is always going to be several footsteps behind 40k and other truly customizable mini games if they can't on board with some of this basic stuff. I WANT legion to succeed. I love the mechanics. I'd LOVE to see it overtake 40k as THE tabletop miniature game, but it absolutely needs to come a long way with respect to army customization, and since there is ZERO conversion opportunity, I would assert that some of these binders need to be taken off.