My favorite colours are blue, grey and black. But wait! Black isn't actually a colour now, is it? It's more like, the absence of any colour! If a body absorbs all colours falling on it and doesn't reflect any, then it's perfectly black. In fact, in physics, a black body doesn't reflect any radiation falling on it, visible or otherwise.

On the other end of the spectrum ( pardon the pun :D ) is white. White isn't a colour either. It is the complete opposite of black ( like you didn't already know that! ); it is the equal presence of all colours.

So the next time someone mentions that black ( or white ) is their favorite, you can sniff, turn your nose up in the air, look at them disdainfully and say, 'Well! That's not even a colour!"

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