Re: Colors

I discovered recently that my conlang has a word for the 'color' of
something that looks black because there is too little illumination, which
is not the same as the word for something that is actually black.

I'm curious whether there are other examples from natlangs of color words
that are actually about something other than color. The only ones I can
think of now are "silver" and "gold", which describe things that are grey
or yellow, and also shiny.

"Blue... no, clear! Aaaaaaah!"