Within the Spartan Hub under Spartan ID, when you select brown, the emblem shows as black within (1) the emblem colors section and (2) on the player’s card in the top right corner for both the primary and secondary colors. However, on your spartan’s armor (shoulder) the color will be brown. I know this is minor and a quick fix, but it still needs to be fixed nonetheless.
NOTE: The numbers above indicate the two areas where the color is not show properly. Instead of being brown, the emblem is black.
I have been having this same problem, and its more than just brown a lot of the colors dont match. Hopefully they do something about it, but like u said it is a minor thing and maybe they wont do anything about it.
Changing the tv settings dosent help, its actually in the game