Hi,all I'm watching a video on the French artist Marcel Duchamp. When the person in the monologue describing the background color of his Nude descending a Staircase, I thought I've heard a word (among several colors what he had named), whose pronunciation is similar to "sibia". As I've consulted the online English dictionaries, it is more likely to be the name of a bird. But could it be refering to a color as well? I mean could you give me its synonyms? Thank you very much!