Languages
Speak in colours!
...a long face Faire travailler sa matière grise- (lit. to put his/her grey matter to work), to put his/her thinking cap on Black [Image of black sky with with French idioms concerning the colour black written across the image] Être noir de monde- (lit. to be black with people), full of people Broyer du noir- (lit. to crush some black), have the blues/be down in the dumps...