monochromatic vs polychromatic

monochromatic

adj
  • Having only one color, represented by differing hues and tints. For example shades in a black and white television. 

  • Perceptive of only one color; unable to distinguish colors; total color blindness. 

  • Plain, dull, lifeless. 

polychromatic

adj
  • Showing a variety, or a change, of colours; having many colours; multicoloured. 

  • Composed of more than one wavelength. 

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