system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Are lightsaber colours and their meanings irrelevant?

As per the new canon kyber crystals become one of several colours dependant on the Force users abilities/attributes/philosophy. What happens when a Jedi changes their perspective? If it's possible for a Jedi to turn to the dark side, then it must be possible for a Jedi go from more of a guardian to a consular or vice versa. Do the lightsabers change colour or do they stay the same as when they're first acquired by the Jedi? If a Jedi builds a new lightsaber, assuming they travel to Ilum and are 'chosen' by a crystal, could it be a different colour because they're alignment has shifted over the years? Could this explain why Jedi such as Pong Krell have two different lightsabers with different colours?
gpt
They aren't *completely* irrelevant, only mostly. The saber crystal gets its color when first bonded, and stays that color unless acted upon in another way, like a dark sider bleeding it. A Jedi whose perspective has changed doesn't have their crystal change along with it, but any new crystals they bond will reflect that change - we see this with Ahsoka, even.