For the first two movies, A New Hope and Empire Strikes Back, Luke uses his fathers blue lightsabe given to him by Obi-Wan. In the dual with Darth Vader in ESB, Vader cuts Luke's hand off sending it and his lightsaber into the pit below. Not able to recover the saber, Luke begins the process of building his own and in Return of the Jedi we see him with a new green lightsaber. So, Luke used both but the one he made himself is green.
Green when he was a Jedi. Yes, but before he completed his training he had his father's (Anakin Skywalker also known as Darth Vader's) blue lightsaber. If his father hadn't cut off Luke Skywalker's hand, he would probably still have the blue lightsaber. And Darth Vader lost a valuable memoir by losing the blue lightsaber. After Luke lost his hand, he had to get a new lightsaber, which was green and that was the color he preferred than blue. And in my opinion his new green lightsaber is better. Luke later retrieved Anakin's saber and gave it to his wife Mara Jade.
blue
It is tradition for a jedi to build his/her own lightsaber once their teacher believes they are ready. The blue one was Anakin's lightsaber, so Luke (I believe it is in the book Shadows of the Empire) that he builds his own. <><
The list of the what-if Star Wars Force FX Lightsabers (with removable blades) are: Kanan Jarrus Force FX Lightsaber (Star Wars Rebels) Ezra Bridger Force FX Lightsaber Blaster (Star Wars Rebels) Grand Inquisitor Force FX Double-Bladed Spinning Lightsaber (Star Wars Rebels) Fifth Brother Force FX Double-Bladed Spinning Lightsaber (Star Wars Rebels) Seventh Sister Force FX Double-Bladed Spinning Lightsaber (Star Wars Rebels) Eighth Brother Force FX Double-Bladed Spinning Lightsaber (Star Wars Rebels) Savage Opress Force FX Lightsaber (Star Wars: The Clone Wars) Ahsoka Tano Force FX Lightsaber (Star Wars: The Clone Wars) Ahsoka Tano Force FX Dual Lightsabers (Star Wars Rebels) Qu Rahn Force FX Lightsaber (Dark Forces II: Jedi Knight) Yun Force FX Lightsaber (Dark Forces II: Jedi Knight) Gorc Force FX Lightclub (Dark Forces II: Jedi Knight) (downsized version) Pic Force FX Lightsaber (Dark Forces II: Jedi Knight) Maw Force FX Lightsaber (Dark Forces II: Jedi Knight) Sariss Force FX Lightsaber (Dark Forces II: Jedi Knight) Boc Aseca Force FX Dual Lightsabers (Dark Forces II: Jedi Knight) Jerec Force FX Lightsaber (Dark Forces II: Jedi Knight) Kyle Katarn Force FX Lightsaber (Jedi Knight II: Jedi Outcast) Desann Force FX Lightsaber (Jedi Knight II: Jedi Outcast) Tera Sinube Force FX Lightsaber/Cane (Star Wars: The Clone Wars) Ki-Adi-Mundi Force FX Lightsaber (Star Wars: Prelude to Rebellion) (colors: purple and blue) Adi Gallia Force FX Lightsaber (Star Wars: Episode I: Jedi Power Battles) (colors: red, green, and blue) Plo Koon Force FX Lightsaber (Star Wars: The Clone Wars) (colors: yellow, blue, and green) Saesee Tiin Force FX Lightsaber (Star Wars Episode III: Revenge of the Sith) (colors: purple, blue, and green) Even Piell Force FX Lightsaber (Star Wars: Emissaries to Malastare) (colors: red and green) Coleman Trebor Force FX Lightsaber (Star Wars Episode II: Attack of the Clones) Yaddle Force FX Lightsaber (Star Wars: Emissaries to Malastare) Oppo Rancisis Force FX Lightsaber (Star Wars: Republic) Yarael Poof Force FX Lightsaber (Star Wars: Zam Wesell) (colors: yellow and blue) Jacen Solo Force FX Lightsaber (Young Jedi Knights) Jaina Solo Force FX Lightsaber (Young Jedi Knights) Anakin Solo Force FX Lightsaber (The New Jedi Order) Exar Kun Force FX Lightsaber (Tales of the Jedi) Mara Jade Force FX Lightsaber (Mara Jade: By the Emperor's Hand) Corran Horn Force FX Lightsaber (I, Jedi) Lumiya Force FX Lightwhip (Marvel Star Wars) Darth Plagueis Force FX Lightsaber (Darth Plagueis) Darth Malgus Force FX Lightsaber (Star Wars: The Old Republic) Darth Bane Force FX Lightsaber (Star Wars: Jedi vs. Sith) etc.
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Blue. I like blue.
Luke Skywalker's original lightsaber, from Obi Wan Kenobi, was blue. However, in a fight with Darth Vader, he cuts off Luke's hand with the blue lightsaber. After this, when he got a new hand, Luke decided to get a new lightsaber. The new one was green. P.S. Skywalker is not hyphenated.
Green when he was a Jedi. Yes, but before he completed his training he had his father's (Anakin Skywalker also known as Darth Vader's) blue lightsaber. If his father hadn't cut off Luke Skywalker's hand, he would probably still have the blue lightsaber. And Darth Vader lost a valuable memoir by losing the blue lightsaber. After Luke lost his hand, he had to get a new lightsaber, which was green and that was the color he preferred than blue. And in my opinion his new green lightsaber is better. Luke later retrieved Anakin's saber and gave it to his wife Mara Jade.
Anakin's lightsaber blade's color was blue
Luke's sword is named Anakin Skywalker's lightsaber.
Lightsaber, his is blue (I think) until he becomes Darth Vader when it is red, like all the other Sith. Every Jedi has a lightsaber and the most common colours are blue and green, but Mace Windu has a purple one.
blue
Yoda carries a green blade in combat.
It is tradition for a jedi to build his/her own lightsaber once their teacher believes they are ready. The blue one was Anakin's lightsaber, so Luke (I believe it is in the book Shadows of the Empire) that he builds his own. <><
yes.
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Yes. There were many types of lightsaber crystal colors. But blue and green were the most common. Yellow was used during the Old Republic times when it was more common. Throughout the Star Wars timeline, lightsaber crystals besides blue and green started becoming rare. If you want to see the full list of all the colors, follow this link: http://starwars.wikia.com/wiki/Lightsaber_crystal#Known_color_crystals