[Elecraft] K3 Colour Contrast

[David F. Reed]

Fred,

to refresh your memory and in case others are interested in learning 
more about this unusual problem,
the book you are likely think of  is */"The Island of the Colorblind"/* 
by Oliver Sacks (a noted neurologist), the islands (in Micronesia) are 
Pingelap and Pohnpei.

In the book, he refers to this condition as achromatopsia 
<http://en.wikipedia.org/wiki/Achromatopsia>.

I (like many other males) suffer a form of colorblindness which is far 
less limited than this, but did require a demonstration of ability to 
distinguish red and green under specific conditions to pilot an aircraft 
at night by the FAA.  I can make out resistor color codes under very 
strong light, but barely.

If its not too personal a question and if you can excuse my 
inquisitiveness, is your condition due to being devoid of cones in the 
retina, or is it more a a "wiring" problem? It seems that the symptom is 
associated with maybe six possible different underlying causes. Do you 
suffer from hemeralopia (blindness in full sun)?

There is an interesting website that lets normally sighted people get an 
idea of how a colorblind person (of differing types) would see 
something. http://www.iamcal.com/toys/colors/. It might prove helpful in 
giving others an idea of how you see things.


Fred Jensen wrote:
>
> I am monochromatic [pretty rare unless you're from a remote island in 
> the S. Pacific I can't remember the name of -- I'm not from there and 
> I'm pretty sure none of my ancestors are either].  I can't see the 
> numerals on my K3 keypad which my wife tells me are red on a dark gray 
> button.  I can discern all the rest of the legends.  I've figured out 
> where the keypad keys are however so I'm not going to file an ADA suit 
> against Elecraft :-)  I do have much better vision in very dim light 
> than all the rest of you.
>
> Please don't ask me, "What colors can you see?"  I can see all of 
> them. I just can't name them, and lots of them all look alike to me.  
> I began to realize I wasn't discerning colors well when everyone had a 
> lot of names for colors that looked the same to me.  I realized I was 
> monochromatic when color TV appeared and it looked just like B&W.  
> I've run across some pretty difficult web sites.  Windoze Default 
> color scheme works OK for me.
>
> 73,
>
> Fred K6DGW