It's an interesting thought, but what I perceive to be blue might actually what you perceive to be green. Imagine people around you who go thru life seeing 'blue' vegetables (though it seems perfectly normal to them *because* that's what they always known the label 'green' to refer to). And how would one actually prove any of this?
Curiously, Ryan From: "Doug Franklin" <[EMAIL PROTECTED]> Do we all see the same colours? Two people look at a coloured object; both agree that it's yellow-green. But do they actually perceive identically?