That is a neat observation Jeffdengr. As is yours Alan.
I would also through in the psychological effects of colours into the discussion. Especially since I don't think the index of refraction or the photo-electric effect had much input into the colour associations. However, the rainbow may have been influential.
I like the idea that the scientific and the personal interpretation of light energy have a similar ordering. That the same or similar information is being percieved by the human and mechanical systems. It's the kind of think a Spring Forest Qigong practitioner with a background in physics really likes.
Sorry, no answers, just gratitude for your sharing.
You are perfection.
Iam2 
