multicolor vs rainbowed

multicolor

adj
  • Having, resembling, or pertaining to many colors. 

noun
  • A display of many colors. 

rainbowed

adj
  • Resembling, involving, or illuminated with a rainbow; patterned with the colours of the rainbow. 

  • Made up of several races or ethnicities; rainbow. 

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