chroma vs high color

chroma

noun
  • The colorfulness relative to the brightness of a similarly illuminated area 

  • The aspect of a colour's hue that depends on the amount of white or black in it; saturation 

  • A note in a chromatic scale 

high color

noun
  • a strong color 

  • a pinkness or redness of the face; having rosacea; having a flushed face 

  • graphics with two bytes of storage per pixel, allowing for up to 65536 different colors 

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