Just crafted Juggernaut the old fashioned way (not with Legendary Mastery) on my revenant. When I unsheathe it my armor just turns dark. I tried it with various dyes and armor skins – all the same. I ran around the wilderness and noticed that the chromatic effect kicked in when i got hit by a mob while running past it, so it’s sort of working, although even then it looks the same after trying various dyes, armor skins.
I just spent a LOT of money and time on this, and not a+ super happy satisfied customer.