Why does yoda have blue saber in this picture??

Yoda pic Yoda images, Yoda wallpaper, Star wars yoda

Why does yoda have blue saber in this picture??

Everything About Master Yoda's Lightsaber - NEO Sabers™

59780 - Stitch as Yoda With a Light Saber - Star Wars Weekends 2013 - Walt Disney World Disney Pin

In Star Wars, are there any Jedi with red lightsabers or Sith with a green/blue lightsaber? - Quora

Did some Baby Yoda fan art : r/BabyYoda

Master Yoda's Green Lightsaber

Did some Baby Yoda fan art : r/BabyYoda

Why Luke Uses a Blue Lightsaber Against Kylo Ren in The Last Jedi