What is Chromatic Dragonspawn in World of Warcraft

The Chromatic Dragonspawn are level 58-60 elite dragonkin that are found in Blackrock Spire. They have between 14,805 and 16,260 health. Their two abilities are cleave and strike (inflicts increased melee damage). When skinned they will drop 1-2 rugged leather, a dragonscale (red, black, blue, green or worn), a thick hide, or 1-2 thick leather. Aside from all the normal trash drops and potions, these guys have a chance of dropping a Chromatic Dragonscale (a blue quality item used in making a Chromatic Cloak).