Originally posted by simon snowflake
black aint no colour nor is white or grey.
I mean, what's your definition of colour? In a physical way, black is no colour because it means no light... but white is all visible wavelengths together (at least those detected by our eyes), if that makes it a "no colour", then brown (and olive, and maroon...) isn't either, because it's the combination of several other colours of wavelengths.
And grey is just a not-so-bright white.
For me, if you can see it, it's a colour.