color vision

I have a friend who makes everyone else seem color-blind.

This evening we were conversing about the colors of certain numbers, and we soon moved on to particular words. "Give me a Spanish word that I don't know," she suggested, "and I'll tell you what color it is."

"Luciérnaga."

A moment or two while she absorbs it. "I see a green-gold color. I can't decide between the two."

"You're sure you don't know that word?"

"No idea whatsoever."

Staring in wonder, "it means firefly."