Before turning to the Dark Side, Darth Vader was known as Anakin Skywalker. He was played in two of the Star Wars prequels by Hayden Christiansen, who was born on Apr. 19, 1981.
Christiansen wielded a blue lightsaber as Anakin. It was taken from him by Obi Wan Kenobi, who later gave it to his son, Luke Skywalker. Luke lost it in a duel with Vader on Cloud City in The Empire Strikes Back. The next time we saw Luke in Return of the Jedi, he had made himself a new green lightsaber.