I think the cartel peice is much darker. Also like some other choice chestpeice the other bits colormatch imperfectly. Like realloy bright green highlights. (the cartel peice that is) The orginal seems to match up pretty well.
You would be incorrect. I compared both in game and photoshop and they are identifical. Also, if you do a color match in-game, you'd see no change between any pieces. I think you are confusing this with the lighter green sets such as the electrum onslaught set.