20 Things You Somehow Missed In Star Wars: Episode VI - Return Of The Jedi
16. It's The Only Skywalker Saga Movie Not To Contain A Blue Lightsaber
There was actually a time when Luke Skywalker was going to be seen sporting yet another blue lightsaber over the course of Episode VI, with the leading figure being found wielding that very colour of blade on the film's original posters and during the ROTJ's teaser trailers, too.
Ultimately the call was reportedly made to change up that hue due to the blade clashing with the blue sky above during the opening Tatooine sequence.
And in swapping out the blue for the green for Luke's new lightsaber, Return of the Jedi ended up becoming the only Skywalker Saga feature not to showcase a blue variation of the sacred weapon. If you don't count those early posters and promotional material... which your writer is not.