colorize vs illuminate

colorize

verb
  • To add color to. 

  • (Canadian spelling, acceptable) To convert black and white media to color by digital post production (as is often done in digital photography and in video special effects). 

illuminate

verb
  • To shine light on something. 

  • To be exposed to light. 

  • To glow; to light up. 

  • To decorate the page of a manuscript book with ornamental designs. 

  • To decorate something with lights. 

  • To clarify or make something understandable. 

  • To make spectacular. 

  • To direct a radar beam toward. 

noun
  • Someone thought to have an unusual degree of enlightenment. 

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