Turn Ben’s Saber (in the TLJ flashback scene) to Green to really show and dig in that “New generation of Jedi” Idea.
I always thought saber colors had a theme:
White : Jedi Knight
Green : Jedi Master
This fit Luke’s path in ROTJ.
It fit Qui-Gon and Obi-Wan in Phantom.
AOTC…kind of followed that pattern. Yoda had green, Anakin and Obi-Wan had white.
But then Obi-Wan always had white even as a master while on the council…so it basically fizzled out as an idea with all the various extra Jedis just being whatever and it was clear Lucas didn’t follow the master-knight theme.
Obi-Wan has blue all the way until his death, so that was never the strict measure.
Blue is more about taking physical action with the force.
Green is about being more reflective and mystic in the fight against the dark side.
Yellow is about being more scholarly and stoic with the force.
Purple is usually associated with the concept of “grey” Jedi, those that seek that dangerous middle ground at the edge of the dark side.
Red is corrupted and bleeding from the dark side (old EU defined them as being artificial).
White (like Ahsoka’s sabers in Rebels) have been purified after going to the dark side.
One idea I had in a prequel rewrite was that the different lightsaber colors were the result of different factions that broke off from the original Jedi order. The “prime” Jedi (Obi-Wan, Anakin, the other Obi-Wan apprentice) use blue, the “renegade” Jedi (Qui-Gon, a Count Dooku equivalent, eventually Luke) use green, the leaders of the “prime” Jedi (Mace Windu and his associates) use purple, the Sith (now a splinter of the ancient Jedi) use red, and Luke/Rey’s Jedi Order would use all of the above alongside yellow and white.
It’s not particularly relevant, but I thought it fit with the talk of saber colors. It also fits with my prequel edit idea of having Qui-Gon be the only Jedi with a green lightsaber (maybe Dooku would have one, even after becoming a Sith).