Specialized B1-series battle droids were distinguished by colored markings on their armor. Additionally Jedi can use the Force to heal them of the dark side presence, causing them to turn white.
The Sith often wielded red lightsabers due to a process known as bleeding, where the user used the dark side of the Force to bend a kyber crystal to their will. The color being determined by the youngling's 'spiritual alignment.' A Jedi's lightsaber blade was usually green or blue, but other colors were possible, such as Mace Windu's purple-bladed lightsaber. A lightsaber crystal was colorless until it was found by a Jedi youngling, where the youngling would then become attuned to the crystal and the crystal would display its color. The color of a Jedi lightsaber's blade was defined by its kyber crystal, which was harvested from the Crystal Cave on Ilum. ' I don't care what color he is! No droid can be that important.' ― Poe Dameron and Finn, regarding BB-8 Īhsoka Tano's lightsabers were white, due to her purifying a pair of red kyber crystals that were 'bled.'
