>The fact that we can represent "color" as an RGB triple is purely an artifact of the ways our eyes are built.

I've thought a bit about this before and came to think, what if humanity disappeared and only our creations were left and they were discovered by an alien species but to them it would just look like the way we see the colonies of ants, the shell of shell fish, etc., that is to say just a pile of matter organized for housing, and the aliens were unable to percieve the fact that we have encoded vast amounts of knowledge in our artifacts. That would've been quite a cosmic tragedy.