i don't think shinies had set values. They were just stronger than regular pokemon.
I think you people are mistaking deter values and effort values.
I was under the impression that all the Pokemon games have individual values and effort values. IV determine how strong a Pokemon really is. Effort values determine the stat increase depending what you fight.
Shinies have a range of possible deter values.
i know what Effort Values are. Which is why I don't think Silver/Gold didn't have them.
It seems too advanced* for the Metal Gen. games.