However, one can escape "no absolute truth" by remembering that is an absolute statement, which, if true, undermines itself paradoxically.
That's more of a semantics problem, isn't it?
If in such a model there were no absolute truth then how would that be stated?
The best color is magenta, because it's real-yet-not?
...actually had more time to think about it, and I think, as a spectrum answer rather than as a hard RGB answer, that colors ranging around Red are the prettiest (so orange and purple apply, but to less of an extent the less red they become).
My reasoning behind it:
o In nature, we are meant to recognize the color red as a survival aspect. Food, blood, poisonous markings on creatures, the color red is meant to be the most eye grabbing color. As a side-effect of that it is also taken as the color of passion.
o In art, color theory has a split between warm and cool color, warm color being more inviting while cool colors recede. Warmth in a color tends to be noted by how much red and yellow is in it, while how cool it is by contrast is demonstrated by blues and greys. Think Van Gogh, the guy was weirdly emotionally sensitive to color and it shows even in his less popular works.
o In advertising psychology, the color red has been appropriated for it's eye grabbing effects for advertising, When combined with yellow it's meant to elicit appetite, which in itself is interesting when you figure Red is the passion inciter while Yellow tends to make people feel more ill at ease or anxious, grabbing attention similarly to red but triggering a different reaction. Even your cheeses being dyed orange, or your chips having orange powder, is largely meant to elicit the same idea. You can see this combination of yellow and red utilized in a lot of fast food trends, usually only marketing a more peaceful color like green towards those who may respond more poorly to red (like vegetarians). Blue by contrast is considered a generally unappetizing color, as we saw when the market tried to sell green and blue ketchup.
Why I don't go with Orange being the color however is over how Pink and Purple with red leaning is just as marketable, but rather than pushing for food it pushes for a subdued sense of drawing in the eye. While blue is comforting, it doesn't really awaken anything in the individual as it by design recedes in to the background. It's nice for chilling out, like how green is, but that isn't really what pretty is about.
^ Even all of this is, at best, a human conclusion. We cannot say if that color would be 'pretty' to a gazelle, or a bull.
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