SleekHeels

That would be lovely. Actually, I suspect it would be very tiring. But no, it's the words that have colours, so the rattle and hum of conversation doesn't do it (though 'rattle' and 'hum' are white and brown respectively). I have heard of people who see colours when they hear other sounds, sometimes even music. A couple of others on HH place have similar. Have you read the Girl in the Raspberry Shoes thread? It was years till I knew it wasn't the same for everyone.