Instinct (observation haki) has now a white aura around players,npcs, and yourself if nearby the enemy.I think it's for hunting players in close range.Aura (armament haki) has now a colored outline on your sword and gun depending on your aura color. Originally this was only in PC but now it is on Mobile as well now. I really hope it isn't a temporary update because cool little details is what makes the game more enjoyable. I learned that from a comment in a dough awakening video.