color up vs suffuse

color up

verb
  • To blush (to go red). 

  • To exchange a high number of low-value chips (of one color) for a lower number of higher value (of a different color), but keeping the same overall value. 

suffuse

verb
  • To spread through or over something, especially as a liquid, colour or light; to bathe. 

  • To spread through or over in the manner of a liquid. 

  • To pour underneath. 

adj
  • Suffused; diffuse. 

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