[bojan]

Hmm..
I am aware of quantifying colours it terms of numbers, of course.. And I do understand photometric/colorimetric aspects of the issue.
Especially when we are talking about chromatography and applications in chemical analysis and/or medical tests, which are very sensitive thanks to determining the exact colour of specimen after reaction with agents (? I hope I am using the right terms here)
However, what is the point of precisely calibrated monitor and billions of colours if you can not see the difference between two adjacent colours from that vast pallet on the screen (or in publications )?
Pure academic, me thinks..

In the past many people approached me for advice on HiFi speaker cables, asking should they or should they not cough out k$ for special gold-plated speaker cables for their new system (they have been told in the store that gold resonates better on audio frequencies and the acoustic quality achieved will be almost perfect with this cable, and mind you, this was in times of vinyl )... What rubbish !!! I tried to argue, even with some formulas and calculations that there is no way such a cable cable could be any better than ordinary humble copper multi-thread wire of the came thickness.. but in some cases they still purchased "special" cable, just in case. And they even told me their system sound better than before !!
In those cases, I would just said "good for you :-) "