What shall you do in this situation?

Thoughts on the MS layoffs?

The idea of there being reasons for the colour of a lightsaber is stupid to begin with. At most the colour choice can be seen as a creative decision to infer meaning to the audience, without having meaning within the context of the film's lore itself.

Original Luke had his father's blue lightsaber. Obi-Wan's was also blue because they were both Jedi Knights. Vader's lightsaber was very likely red just to contrast well with Obi-Wan's lightsaber when they fight in ANH. At the stage of that film being made Luke's father and Vader were two different characters. It's easy to assume that Vader's lightsaber was red simply because he had a red lightsaber. The only reason he had a lightsaber to begin with was because he was a still practicing jedi, despite having betrayed the jedi order. Retroactively you can infer the red to represent that betrayal, but at the time of the choice it likely wasn't the case. Luke getting a green lightsaber in Return is simply to demonstrate his growth. He no longer idolizes his father (whose blue lightsaber he previously used). He has become a jedi knight and his lightsaber, made of his own craft, shows his newfound individuality.

That's as far as lightsaber colours go in the original trilogy (which is all that matters, honestly). The Sith (The Emperor) did not use lightsabers, outside of Vader. They were a "jedi weapon" that Vader only continued to use due to being a Jedi.