Why Palpatine HATED Darth Vader’s Blue Jedi Lightsaber

Why Palpatine HATED Darth Vader's Blue Jedi Lightsaber 1

When Anakin Skywalker turned Sith and became Darth Vader, he still wielded his blue lightsaber as he did when he was a Jedi, now that he had lost it to Obi-wan, Sidious was very pleased.