local color vs town square

local color

noun
  • Aspects of a location that distinguish it from neighboring communities; the collective customs, mannerisms, fashions, artwork, accents or traditions of an area. 

town square

noun
  • An open area commonly found in the heart of a traditional town, used for community gatherings. 

  • An online space or platform which serves a similar function. 

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