A friend told
me about a story she heard from a once-Orthodox man, that when he was a child,
the end of shabos, Saturday, was determined not by a clock but by the moment when one
could no longer distinguish a red thread from a green thread in the evening
light. Now I think he said “someone”, no
doubt meaning the same someone every week, who went out from the synagogue every
few minutes, and held up the threads in the waning light, and when he himself could
no longer distinguish green from red, he went back inside and announced that
shabos was over. The beauty in this
story belongs to this privileged man, because the perception of color is
profoundly affected by one’s mood, by one’s emotions. And I imagine that he didn’t need to go
outside too many times, because at that moment in his devotion when the feeling
came on him that shabos was drifting away, he went outside and could not tell
the green from the red.
Green and
red are complements on the color wheel, that is, they sit opposite each other. Here’s the traditional color wheel concept (in a very lovely rendition by Jill Morton) for pigments (though not for computer
graphics): the three primary colors, red,
blue, and yellow, can’t be derived by mixing other colors, something like
primary numbers, and theoretically you only need these three. You
make secondary colors, green, orange, and purple, by mixing the two primaries
next to them, and with
judicious mixing you can have all the colors you could ever want.
When two
complements are side by side in an image, or in your dress, or in nature, they
enhance each other. They maximize the
contrast. So you put your tomatoes in a
green box to make them look very red, and you hold up a red and a green thread
in diminishing light to be absolutely certain that shabos has quietly slipped
away for the week.