.. wrote:
Dave Fawthrop wrote:
snip
Colour is a very personal thing

it's totally impersonal, measured in Kelvin's.

Not really.
Kelvins only works for black body sources, that act like a hot object
radiating light.
For lights that are not black bodys, such as LEDs or fluorescant, it's a
hell of a lot less clear, as the spectrum diverges considerably from a
proper black body.
Objects can look substantially different under lights of nominally the
same colour temperature and brightness.