Its just a rare pretty color. Its not mutated (in ark breeding definition) since wild ones can have the exact same color. If you lore lovers want to say the pretty color drakes are mutated then go wild. Sometimes you can get eggs to spawn if you bring a certain drake over to an empty nest but that was before the patch that fixed the falling drake eggs so idk if they changed something or not. So your answer is maybe you can get a specific drake to spawn an egg if you bring it by an empty nest but you are better off just farming high level eggs and hoping for the best.