Thank you for your time and efforts. I know the link. My idea was to use these numbers to adjust colors in CS (using Color correction and eyedropper tool) of the objects (mycology) on my pictures. I 'measure' colors in field by visual comparison of the objects (mushrooms) and the swathes. May be I can pick RGB numbers directly from seathes on their website? May be this would work too? When I compare colors of their chard displayed on the monitor and those on the paper chard they seem reasonably similar.