I came across culture-specific meanings of concept 'blue' (that is, of a colour hue between green and violet) in various languages. We know its idiomatic meanings in Standard or American Englishes, but in Russian 'blue' (or, actually, light blue) /голубой/ has an idiomatic meaning 'gay' (referring to sexuality).
In other languages, the word has some other idiomatic meanings, e.g. surprised/drunk in French, or 'police person' (in Latin American Spanish).
Which other languages have specific idiomatic meaning for the colour? Not just in idiomatic sayings (e.g. like 'blue collar', or 'out of the blue'), but rather like a standalone word?
Was such an idiomatic meaning in any ancient languages ever?