Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

The outlined flap at the back of the armor is dyable, but only for the player doing it.

I have it dyed to black, but every other player will see it as undyed white.

Testing it on a few PCs, it seems that it depends on graphics settings quite a bit.

On low settings it showed as a white, but on max settings it's a fade-in/fade-out sort of a deal, which also depends on the angle from which you're observing it.