bronze yellow vs red-brown

bronze yellow

adj

  • Of a yellowish brown colour, like that of bronze. 

noun

  • A yellowish brown colour, like that of bronze. 

red-brown

adj

  • Having a colour between red and brown. 

  • Having the qualities of fascism and communism. 

How often have the words bronze yellow and red-brown occurred in a corpus of books? (source: Google Ngram Viewer )