As someone who had to deal with EA screwing up the 49ers helmets and pants for years, I feel your pain. Here’s how we got the 49ers uniform right, if you want to do the same:
Emailed the NFLPA, saying the game was mismanaging their players’ and the league’s brand (and they responded, saying they’d forward the concern to the appropriate people).
Emailed 49ers
PR.
Tweeted to 49ers
PR.
Tweeted to Jed York (constantly)
Spoke to EA people who frequented the forums.
Spammed every EA twitter.
Emailed EA Tiburon in every way possible (including filling out job applications to point out the helmets are supposed to be metallic, not flat tan).
And many other things.
We tried to avoid being jerks about it. But we DID get responses and DID get them to change it. They even made it a little bit of a hype-build by not so subtly showing off Frank Gore’s golden helmet.
Point is, there are many points of contact where you can make your disatisfaction with the Cowboys uniform known. They are touting such things as “authenticity,” so use that buzzword. And be polite.