In the opening scene of Star Wars Episode IV: A New Hope, we see Rebel fighters dressed in those blue/black uniforms. Now I get why this is done from a storytelling perspective so we can immediately tell the good guys from the bad guys. But is there an in-universe explanation for the difference?
For instance Leia initially claims they are on a diplomatic mission. They’re almost hiding in plain site as it were. Which stands to reason the uniforms of her soldiers means they would have been “official” soldiers (if this was indeed a diplomatic mission). The ship (a Corellian CR90 corvette) was also something used by both factions was it not?
So later on when we view the rebel base on one of Yavin’s moon, all the rebel soldiers are wearing the same uniform. Is there anything that explains why this is? When I thought about this, my initial theory would be that perhaps they were all from Alderaan. It stands to reason the troopers on Leia’s ship would have been from her own planet and that a larger proportion of them would have joined the rebellion since her adopted “father” (Bail Organa) was sympathetic to the Jedis and the Rebellion.
But it would be difficult to think that the rebels would go “Oh hey, you’re joining us cool, wear this blue uniform so that we recognise you and the Empire will as well.”
Is this ever officially explained?