Re: Quest for colours: what's basic then?

>>People who have actually experienced the binary hue
>>that results from combining the blue and yellow percepts
>>have described the experience as seeing a colour they
>>had never seen before, and of course they had seen green
>>before.
>
>Nifty.  How do I go about having the experience of combining
>the blue & yellow percepts?  I'd like to see a new color.
I don't know if further strategies have been devised
in the meantime, but in the 80's Crane and Piantanida
carried out an experiment involving the use of an eye
tracker to induce an optical illusion of "filling in"
where the environment of the area to be filled-in was
designed so as to generate the novel hues redgreen and
yellowblue as "fillers". There is not much on the web
about this, but you can find a brief description
of the experiment here:

http://www.girton.cam.ac.uk/users/fem30/nc.pdf
(go to section 3: _Experiences of novel colours_)

As I suppose you cannot reproduce that experiment for
yourself (at least I cannot), I think you may still try
to get an approximation of what yellowblue might possibly
look like if you observe surfaces where blue and yellow
interact very closely but distinctly (that is, without
the whole thing becoming greenish), for example with some
tinted glasses and in the half-done mixes of paints you
can find if you look closely at some painting styles.
Sometimes when observing such close interactions of
distinct yellow and blue I've actually had what seemed
to be fleeting glimpses at what could possibly be
a momentary fusion of both percepts during the 'battle'
that the close interaction of the contradictory signals
blue and yellow causes to the cortical process through
which our brain tries to assign a "general" colour to
the field. Of course, I cannot be sure that the thing
actually was it without having undergone the Crane and
Piantanida experiment myself, but certainly I felt
something otherworldly in those fleeting glimpses and
they actually were the closest I've ever experienced
to a yellow-blue mix. I've had more trouble, alas,
trying to get a glimpse at redgreen; it seems that red
and green repel each other more powerfully than yellow
and blue.

Cheers,
Javier