dyed vs tricolour

dyed

adj
  • Coloured or tinted with dye, or as though therewith. 

tricolour

adj
  • Having three colours. 

noun
  • A flag consisting of three stripes that are either vertical or horizontal; all of equal size, and of a different colour each. 

How often have the words dyed and tricolour occurred in a corpus of books? (source: Google Ngram Viewer )