The .json file is an array of all the Pantone colours, including the PMS code, CMYK values, RGB values, and Hexadecimal values. The dynamic-create.php file does what it says on the tin; it iterates ...
For some designers working only in CMYK digital output, this might not be a big deal but for others, and their clients, it could be a recipe for colour communication confusion and inaccurate spot ...