my own theory!

i would say yellow plus blue makes green! but the point is what is green to me maybe purple to you and all your life you called purple as green! i'm reffering to purple as the color i see when i see the color called purple. taking it simple imagine you see everything in inverse colors compared to me (blue for red, black for white etc). now how can anyone prove that you don't see inverse colors, so there's a chance you actually do.

Have you found anyone like this? When you look at red and someone else is lookig at the same color do they say red?
You just said what i said only differently. If one believes it's a different name sure but for the most part the entire world (as far as i know ) is in concesus on color.
Perhaps another example other than color.

i think u still didn't get the point clearly, i recommend u read some philosophies of aristotle,plato etc first and try to understand them, then go through the above comment once again thoughroly. it's not a theory or even hypothesis actually (can be proven or disproven) it's a philosophy. look u can't meet any person like this (it's not a medical disorder!),i'm saying everyone is like this that every single person 'sees' (or even hears,smells,feels etc) a completly different world but still no one knows this cause u can't possibly tell other person unless u become the other person and see the difference urself!