Feels like Mannoroth and Magtheridon switched skins imo. Mannoroth has been very green in recent depictions not teal.
Magtheridon and Mannoroth skins are switched. You can clearly see the green fiery ( without particles) part on Mannoroth head as seen in WoD cinematic and also in Hellfire Citadel raid.
Really hoping they release the Scourge models soon. been waiting for so long.