I'm glad you wrote more. Very interesting.
I wasn't being all that frivolus either when naming my favorite Pantone color.
On the color blue, I don't know if it was here, but someone once posted an intereting article/link saying that until very recently, humans didn't have a name, or even the concept of the color blue.
Here's a link. It get more interesting the further you read.
What I find challenging to my eyes and brain are that the Himba had trouble seeing what we cleary saw as the blue square in the pattern. In reverse, they could easily pick out the one green square among others, when I, and I'm sure most people, can see no difference.
Iron and sheep as violet? Yeah, I can see that. Not just the usual description.
The little girl whose father never told her the color of the sky was blue, and she therefore couldn't see it? Sure, I can get that.