Recolor shield accessories, All Auras is no longer murderous

- All Auras is now more tame, and will use the standard curved Energy-based
  formula instead of giving completely random amounts of auras to every enemy,
  so the player isn't murdered immediately by 50 shadow enemies in the start
  room.
- Restored and tweaked most of the Shield Accessories to use sensible colors
  indicative of what they're best at, and note down the form for coloring them
  for future reference.