Force lightning occurred in at least six colors; blue, green, yellow, white, black and red. The typical form was a bluish-purple or bluish-white version as demonstrated by Darth Sidious, Darth Tyranus, Snoke, Yoda, and Rey; Nightsister magick equivalents were green like magical ichor as demonstrated by Mother Talzin.
Force lightning was a well-known Force ability used to blast dangerous electrical bolts, most often by practitioners of the dark side of the Force, especially the Sith. The ability was commonly referred to as Sith lightning due to the affiliations of its typical users and manipulation of lightning.
Palpatine actually had purple/blue lightning. In Star Wars there are three forms of lightning, blue, purple, and red. In that order is the strength of the different lightning's. Blue being the weakest and red being the strongest.
However, there is a third variety seen only by the most dangerous masters of the Dark Side: Red Force Lightning. Unlike normal Force Lightning, Red Lightning was generated by a Dark Side individual gathering and releasing cosmic energy of the universe itself. It can also be used to suck the life out of a target.
Either way, while Vader can use most other Force abilities, Force Lightning needs to be channeled, and Vader's limbs are explicitly not connected to the Force. The Star Wars: Episode III - Revenge of the Sith Visual Dictionary confirms Darth Vader cannot use Force Lightning, and even suggests this is the reason why.
Kylo demonstrably couldn't defeat Snoke directly, instead killing his master via deception. Kylo most likely never learned how to conjure Force lightning, which is considered an advanced skill for dark side users.
The most common variation of Force lightning is a blueish-purple color. It was the original version that the Emperor used in Return of the Jedi, and it has continued as the mainstay for most Dark Side users.
Force lightning occurred in at least six colors; blue, green, yellow, white, black and red. The typical form was a bluish-purple or bluish-white version as demonstrated by Darth Sidious, Darth Tyranus, Snoke, Yoda, and Rey; Nightsister magick equivalents were green like magical ichor as demonstrated by Mother Talzin.
In snowstorms, where it is somewhat rare, pink and green are often described as colors of lightning. Haze, dust, moisture, raindrops and any other particles in the atmosphere will affect the color by absorbing or diffracting a portion of the white light of lightning.
The color of the bolt depends on how hot it is; the hotter the lightning, the closer the color will be to the end of the spectrum. The color spectrum in this case start with infared which is red and the coolest up to ultraviolet which appears violet and is the hottest.
Anakin Skywalker's Chosen One Potential Was Permanently Stunted. The Darth Vader comic book series reveals that, while the eponymous Sith Lord was indeed capable of using Force Lightning, the electricity could potentially destroy his life-sustaining suit.
Darth Vader can not use force lighting, because of his severed arms. Robotic hands can't summon the force lighting. However Darth Vader can still use other forms of the force, such as force choke.
Some have even speculated Sith can grow addicted to Force lightning. This naturally explains why Jedi do not generate Force lightning. Jedi seek to master their emotions rather than be mastered by them; Force lightning is therefore forbidden, as it is best understood as a spontaneous outpouring of hatred and rage.
Bolts of lightning can come in a variety of colors. Most often we see white bolts of lightning but it can take on any of the colors in the rainbow ranging from red (in the infrared band) to violet (in the UV region). Depending on weather conditions you might see tinges of other colors at the edges.
Blue lightning bolts tend to be the hottest lightning bolts to occur on earth. They are also some of the more commonly observed colours (after lilac lightning). Atmospheric-wise, they maybe caused by small amounts of dust in the atmosphere.
Being a power summoned through the dark side of the Force, it's not surprising that Force lightning can also manifest in red. This variant was used by the Son, who is the manifestation of the dark side itself.
In KOTOR I and II Blue is the most common with few exceptions (Nihlus' red being the most unique of this era). In SWTOR many Sith NPC's and the Sith Inquisitor player characters primarily use purple lightning. Arcann's Force Lightning was also a unique yellow color.
Rey tapped into the dark side of the Force to use Force Lightning because she let her anger and hatred consume her briefly. But that doesn't mean that she is part of the dark side. She just usually pulls from the light side more. She is also Palpatine's granddaughter so it's in her blood.
