Are You Seeing What Other People See !

In the presentation TED.com he is basically explaining to the viewers that nothing is what it seems. Most of our knowledge is given to use by the media or learned throughout our lifetime from society. What should we believe about the colours we see. As a child we are taught the names of different colours but does every ones mind recognize the same colour or just the same name ? Racism is based mainly on the colour of a persons skin, and good and evil are distinguished by colours. If we didn't identify colour, would there still be racism or would everyone be accepted? Nobody knows what we are really seeing, touching, feeling , hearing or tasting. We are only told to know about them though family, friends and society.If there was no colour what would we judge people on?