New Ahsoka Star Wars Novel Reveals the New In-Canon Reason Why Sith Lightsabers are Red

Have you ever wondered why the Sith's lightsabers are red? Apparently, it's not just because red is a villainous color. The new Star Wars novel, Ahsoka, written by E.K. Johnston offers our first in-canon explanation of why the lighsabers of those who follow the Dark Side are red, and this was never explained in the films, and it's different from the previous expanded universe's (or now Legends) explanation. In Legends, the red sabers are powered by synthentically-made crystals that the Sith use because the Jedi had control of all the natural sources.

According to Screenrant's list of fifteen things revealed in the novel, the reason why the Sith can't wield blue or green lightsabers is that they simply can't because the lightsaber "bleeds" as the source explains:

Kyber crystals choose Force users and present themselves to their desired owner, but darksiders don't experience this same connection to the crystals. The only way the Sith and other dark side Force users can collect kyber crystals is by stealing them or plundering them off the bodies of their fallen foes. Even if a dark sider were to acquire a kyber crystal from a green or blue, the act of bending the crystal to their will in a new lightsaber will cause the crystal to "bleed," turning it red.

This is a cool explanation as it adds more meaning to the color of the Sith's lightsabers. The films haven't really delved much into the Kyber crystals but now that we know that Jedha, a place where those crystals are found, will be in Rogue One: A Star Wars Story, we might learn more about them in the spinoff and other future Star Wars films.

So what do you think of the in-canon explanation of why the Sith's lightsabers are red?