Unstandardized choropleth maps

http://commons.wikimedia.org/wiki/File:ElectoralCollege2012.svg

Unstandardized choropleth maps distinguish between different values yet they do not have a class system that includes numbers.  The map above is a good example of an unstandardized choropleth map because it shows the difference between states but without a certain standard of numbers.  If there were a standard of numbers there would be more than two colors, there would be a graduated series of numbers.