In Star Wars, Sith lightsabers emit a hue of deep red, the color of blood, sin and the reckless human passion that the Jedi say pulls Force-users to the dark side. While the visual and thematic impact of a red lightsaber may be apparent to us, the question of how and why dark side practitioners use red lightsabers in a galaxy far, far away remained unanswered in live-action until the final episode of the "The Acolyte," in which Jedi Master Sol's (Lee Jung Jae) discarded lightsaber turns from blue to red in Osha's (Amandla Stenberg) grip as she descends into grief and rage.
Osha, an ex-Jedi Padawan, had already suffered from the violent loss of her entire family and struggles to keep her roiling emotions in check as Jedi teachings enjoin her to do. When she discovers that it was Sol, her erstwhile father figure, who killed her mother in a fit of misguided intentions, the dark side of the Force surges forth through Osha, choking the unarmed Sol through one hand and bleeding his lightsaber's exposed crystal through the other.
