system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Why do sith "bleed" their crystals?

So apparently in the Disney canon Sith get their lightsabers by stealing them from Jedi and sorta "bending" the crystal to their will. This is why their blades are red. 

But... what's the point? I mean, we've seen light side and dark side users use lightsabers of "opposite" colour before, so clearly they work fine regardless. And from what the Darth Vader comic shows us, "bleeding" the crystal seems to be a pretty tough ordeal. So why do it? What's the practical purpose? Is it just because sith like the colour red?
gpt
You'd have to pour dark side energy into the crystals to bleed it. This would further immerse the person into the dark side which we know is like falling into a chasm, easy to go in hard to climb out. So it's probably done to solidify someone in the dark side of the force and then it also doubles as a show of becoming a true sith and the red blade is a symbol of hatred/anger etc which is where sith gain their power. The sith order is very old so most of the reasoning probably went from practicality to ceremonial in purpose.