Re: Logo proposal

[John Cowan]

On Sun, Jan 26, 2020 at 12:02 PM sirgazil <address@hidden> wrote:

https://multimedialib.files.wordpress.com/2020/01/guile-logo-proposal-2020-01-24.png
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> Personally, I like the one with the single lambda.
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> What do you think?
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As I mentioned on IRC, my favorites are the 3rd row on the left (red
lambda, white background) and the 1st row on the right (yellow lambda,
black background.  I think the four-lambda versions are too busy, and the
two I mentioned obey the heraldic "rules of tincture", which were designed
to make a knight's shield or a flag maximally visible.

ObDetails: The rules divide the different tinctures (colors) into two
groups: the "metals" yellow and white, and the "colors", everything else,
and state that two metals cannot be adjacent, nor can two colors.  Thus
both black (a color) letters on white (a metal) and white letters on black
print are fine.  So are the red lambda on the white background and the gold
lambda on the metal background.  But the gold lambda on the white
background is metal-on-metal, and the red lambda on the black background is
color-on-color.  These rules are by no means obsolete: they govern the
design of flags and traffic signs to this day.

There are exceptions: the U.S. flag has color-on-color where the top four
red stripes touch the blue quadrant, but this is considered only a minor
violation that doesn't affect visibility.  Likewise one version of the arms
of God (as invented by early modern heralds) uses only yellow and white,
but hey, it's not like anyone will bear *those* arms into battle.  Finally,
when something on a shield is shown in its natural colors, the rules of
tincture can be broken, as in the arms of the Devil:  "gules a fess Or
between three frogs proper", where the (green) frogs can appear on the red
background.



John Cowan          http://vrici.lojban.org/~cowan        address@hidden
A poetical purist named Cowan                   [that's me]
Once put the rest of us dowan.                  [on xml-dev]
"Your verse would be sweeter / If it only had metre
And rhymes that didn't force me to frowan."     [overpacked line!]
--Michael Kay

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