I was going to say something. But then this thread was destroyed by the second post. The thread's potential...gone.
You can change the colour/difficulty of the enemy in some games. Maybe i'd like yellow to be the strongest.
Monsters in Zelda aren't usually designed to be a single colour. Unless it's a Chu Chu. If it's at least twice the size of Link then it's meant to be hard. xD ...there was a giant Chu Chu in Minish Cap. o: