Colour: A particular shade of red. To be precise, the range of colours around CIE chromacity x 0.41, y 0.27 to 0.33; depending on your hardware, they look something like:
... Liberation-sud[?] One of the first groups founded by Emmanuel d'Astier[?], Lucie Aubrac[?] and Raymond Aubrac[?]. It published an underground pape ...