Hello!
Just wondering if the Naxx class set colors are different for each spec (like it was in MC) or not. Can’t find the info on wowhead
(by a mage healer who would really like purple T3 set) 
Unlike previous tier sets, the Tier 3 sets do not have a recolour depending on spec.
Which given they did something similar in WOTLK with the rebranded Tier 7, I do find surprising.