Different Types of Ghosts

Yes, there are different types of ghosts in this game. Here is a list of how you get a certain type of ghost.

White Ghost: If a Sims dies of old age.
Red Ghost: If your Sims burns to death.
Blue: If your Sims drowns in a pool.
Yellow: If your Sims get electrocuted.
Purple: If your Sim dies from Starvation.