That's the second time TODAY that I've seen the word "idempotent".
Spooky.  But an excellent goal to set for all code.

Also applicable to the keyword project I was discussing, with regard to
self-documenting.

As Richard stated:
"Note that the `srgb` keyword will yield consistent colors
regardless of your assumed_gamma setting."

So, if we are using assumed_gamma 1.0 for all scenes, then why are we even using
rgb?   If everything is implemented from here forward using srgb, then
everything should be good, right?   N^1 = N.

Now, I often have to do experimentation where I modify colors from rgb to rgbf
to rgbt to maybe rgbft, and that gets to be a pain to go back and rewrite all
the keywords and color vectors.

Having worked out a fairly robust system for handling vector arity, I'm
considering just making some kind of all-purpose color macro, that detects the
size of the color vector and emits the appropriate keyword.

- BE

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