Wow, so use the standard scheme, but replace orange with black?  
What if you use flourescent orange?  I would think that provides 
enough of a different contrast from dark red.

Chris


--- In [email protected], cycastel 
<[EMAIL PROTECTED]> wrote:
>
> Hi,
> I got the answer from an expert :-)
> You'll find below the email I wrote to Rochester's Laboratory 
> dedicated to color science, they have a webpage where one can ask 
> color scientists about color perception among many other subjects:
> http://www.cis.rit.edu/mcsl/outreach/categories.php
> 
> So here is a scientific optimal color scheme, let start peeling 
our 
> orange stickers ;-)
> 
> "Thanks for your inquiry.
> 
> Generally research on color contrast involves only two colors (such
> as text on a background), so this is definitely an interesting
> question.  You have already identified black and white and they
> should certainly be included in your set of six.  The next step 
would
> be to include 4 chromatic colors that are of intermediate lightness
> (i.e., not very dark or very light so that they are not easily
> confused with the white or black).  While it is difficult to say 
what
> the optimum choices would be, there is probably very little to gain
> in performance once the colors are separated into distinct hue
> categories that would not be confused.  For example, choosing 
yellow,
> green, blue, and red would be about as good as you can do.  You 
just
> want to make sure that the blue and green are clearly 
distinguishable
> which might be accomplished best by making the blue slightly 
purplish.
> 
> I hope this helps.
> 
> -Mark"
> 
> 
> ... and here was the question I sent to them:
> 
> Hi,
> I am a member of an internet forum dedicated to the Rubik's cube 
(I am 
> quite sure you remember this puzzle !), and more precisely to 
> speedsolving this puzzle. As you may remember, there are 6 
different 
> colors (white, yellow, dark red, orange, dark blue, and dark 
green), 
> one for each cube face in the solved state. Each face is divided 
into 
> 9 squares. Some people are able to solve the cube under 20 
secondes on 
> average, using a 7-step method. Steps 2-7 involve "instant" 
> recognition of a case (1 out of ~50 for step 6, one out of ~20 for 
> step 7 for example) and the execution of the memorized 
corresponding 
> moves sequence.
> The question is, do you have an idea about the "ideal" color 
scheme 
> that one should use for optimizing the color discrimination 
ability, 
> hence decreasing the decision time ? This can be reworded as "what 
is 
> the set of 6 colors (including black/white) that human eye is the 
best 
> (=faster?) to be able to discriminate ?". I would be very happy if 
you 
> have any idea or references about this topic !
> Thank you very much for your answer
> 
> Cyril
> 
> 
> --- In [email protected], "Gilles Roux" 
> <grrroux@> wrote:
> 
> We'd need some expert in color discrimination by the human eye to 
tell 
> the perfect set of colors for speed-cubing. Black may be one of 
them.
> Gilles.
>






 
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