Well, if I remember correctly, the texture was darkened, but that's about it. The only real changes besides that were adding green cords on the 43rd, the rear backplate on 28th and variations of the frontal plate for Centre, Grenadier and Light companies in the more recent skins. Officers of some units get feather plumes, but that's just a replacement for the woollen hackle.
Beyond that, I didn't do anything to it. At least not that I remember.
Wow, this topic was buried for more than a year. Nice necro, mate.