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sc94597 said:
Munkeh111 said:
It is colourless, but what it does is refract the light to distort the image, showing us that it is there

In that case everything is colorless. You do know that a refraction in light is a color right?

 

Yes. Gold nanoparticles are purple. It's not what they 'really' are (atoms are not shiny hard spheres). it's the absorption spectra that causes our perception of colour.