party-coloured vs polychrome

party-coloured

adj
  • Coloured with different tints; variegated. 

polychrome

adj
  • Using multiple colours 

  • Executed in the manner of polychromy 

noun
  • A piece of multicolored pottery. 

  • esculin (so called in allusion to its fluorescent solutions) 

verb
  • To divide (a dye etc.) into multiple colours. 

  • To paint or dye with multiple colours. 

How often have the words party-coloured and polychrome occurred in a corpus of books? (source: Google Ngram Viewer )