How they turn to the dark side? I know if a Jedi turning to the dark side he gets bilogical changes. His eyes glow yellow and the face looks sick. Why is that? Are the Midichlorians mutating when beeing used in hatred? I wonder why Ventress never become a Sith, even if she killed dozens of Clonetroopers and other enemies. Why she did not turn to the dark side? Did she never kill in hatred and Egoism? Did she only kill in some weird way of self defence?