eau de nil vs pea green

eau de nil

adj
  • Of a pale bluish green colour. 

noun
  • A pale bluish green colour. 

pea green

adj
  • Of a yellowish green colour, like that of peas. 

noun
  • A medium green colour, like that of peas. 

How often have the words eau de nil and pea green occurred in a corpus of books? (source: Google Ngram Viewer )