The color of the lightsaber is related to the crystal used to cast the lightsaber. Generally speaking, the traditional lightsabers used by Jedi are blue and green, while those used by Sith are red. However, some Jedi use red. lightsabers, and there are also Sith using non-red lightsabers (for example, Darth Vader initially used a blue lightsaber). The lightsabers that appear in the movie are only blue, green, red, and purple. .Other colors, including yellow, orange, silver, pink, etc., all appear in Star Wars-related books and games. Blue is mostly used by Jedi who pay more attention to swordsmanship, while green is more focused on the Force. The Jedi use it, and yellow is a balance between the two. The reason why Sith's lightsaber is red is because the Jedi have kept the location where the lightsaber ore is mined very strictly confidential, so there is no way for Sith to look like The Jedi obtained the casting ore for lightsabers like that. So they have their own casting methods, using their own thoughts to create their "synthetic lightsaber crystals", and then using the Force to cast their own lightsabers. (For example, Darth Maul. He forged the light staff in this way.) The appearance of purple is more dramatic. The first time it appeared was in the EP2 movie (in EP, he still used a blue one...), but the reason is very ridiculous. , because Samuel L. Jackson, the actor who plays Mace Windu, asked for a lightsaber that can make him special, easy to identify, and can easily distinguish Mace Windu and other people holding blue lightsabers on the final battlefield of EP 2 Or the Jedi with green lightsabers are distinguished... -.- Helpless... However, some novels after this went on to fill in this gap from an academic perspective, pointing out that the reason why Mace Windu's lightsaber is purple is because He used a very special ore to cast this lightsaber. What's interesting is that purple is almost a combination of blue and red, but blue is the main color, which shows that the user is on the bright side. But it has a strong contact with darkness (especially for Mace Windu who uses Form paint) Main users: Blue: Obi-Wan Kenobi, Anaking Skywalker == Darth Vader, Green: Yoda, Qui-Gon Jinn, Kit Fisto (The poor guy who was slashed to death by Darth Sidious in EP 3... He was described in the book as quite powerful... It just shows that Darth Sidious is even more powerful...), Anaking Skywalker (He used two swords for a while. .So there are two colors...) Luke Skywalker (originally he was blue in the movie, but it was difficult to identify because it was similar to the color of the sky, so he changed it to green) Red: All Sith are basically this color. .So... Summary: In general, the color of the lightsaber is often decided for some very...erm...boring reasons, but if friends pay more attention to the original Star Wars (novel) , it can be found that the color of the lightsaber in the book can actually reflect the character of the user. Therefore, it is still of considerable research value: