Color Theory

Today I was thinking about the way people are perceived, and the way we perceive others, which lead to my thinking on how everyone sees their surrounding environment differently. One person may think a certain color is beautiful while someone else may think it to be hideous. Just as someone may enjoy a certain smell while their friend may hate it. Is it simply a matter of taste and opinion, or do we perceive things so differently that our world would be totally unrecognizable through someone else's eyes? It has been prooven that some dogs are unable to see color at all and that certain people are unable to differentiate between certain colors, naming them color blind. But how could we proove that what one color looks like to person A looks the same to person B? For example, lets go back to when we were in kindergarten. The teacher may have created a little color chart with 5 circles, each filled in with a different color crayon. Under each circle was the name of the color it represented. What if Sally was able to look through Jimmy's eyes? What she would see as the "purple" colored circle would be what Jimmy would see as the "green" circle and she would be baffled as to why the circle she saw as "purple" was labled as "green". Ten people could stand on a beach staring at the ocean and each would see a different color, but they all would use the word "blue" to describe the color of the object. One person would see what another would call gold, another pink, and so on. None of them would have any idea that the others don't see the color in the exact same way that they do. If this really is the case, I can't think of any feasible way of proving it, unless we physically switched the eyeballs of two people....and even if we did that, it is the sensory mechanisms in our brains that perceive color, not the eyes themselves as far as i know. Actually, i'm fairly sure that it's a combination of the two. On a humorous note, I think that goths would be horrified to know that certain people would see them in what they perceive to be powder blue or maybe light pink from head to toe, rather than their vision of "black". Just a thought.