Wrong.
Black, white and metallic are technically NO real colors.
Human color perception is based on light frequency/wavelength.
A surface that diffusely reflects all wavelengths equally is perceived as white, while a dull black surface absorbs all wavelengths and does not reflect (for mirror reflection this is different: a proper mirror also reflects all wavelengths equally, but is not perceived as white, while shiny black objects do reflect).
With thanks to wikipedia and arts academy, we get to know the colors and non colors. Black, white and metallic are no colors.