Let's use your example:

I know zero about star wars so if I seen multi colored Lightsabers I'll just assume they're just different colored sabers with no meaning, yet I can guarantee someone who KNOWS more about star wars will gladly "correct" me in saying they're held by different rank/entities of the Jedi which generally means they're of a different skill level or position, correct?

Final Fantasy isn't the only series out there, but it is one of the most referenced series just like when someone talks about Sci-Fi they proclaim "Star Trek" or "Star Wars" yet they're clearly not the only Sci-Fi series out there.