As best as I can tell....
      Blue - Awakens sleeping party member, or puts an awake one to sleep
    Yellow - Heals party member
       Red - Cures poison
     Green - Poisons party member (a good way to evade sleep spells)
    Orange - (If anyone knows this one, let me know.)
    Purple - Changes party member to a rat
     Black - Invisibility
     White - Creates light
