I always thought that
only Jedi could use lightsabers
because somehow it reacted
to their use of the force,
amplified it somehow,
somehow only their use of the force
allowed it to work.
I thought that the colours
of the lightsabers reflected
where their force powers came from
along the spectrum of dark side to light.
I always hoped for a scene
in Episode III, Revenge of the sith
where Anikin Skywalker would be so angry
his lightsaber colour would…
and it would be THAT moment
that Darth Vader was born.
Although that never happened,
I still like to think this way.