The ISEAL Branding Guidelines Version 3.0 (June 2021) say we should
use Arial font for online material and it specifies the RGB values
to use for headings, sub-headings, and body text. It also specifies
four secondary colors to be used in support of the primary colors.
After running the util/generate_docs.py script to parse and extract
the metadata term specifications and their controlled vocabularies,
we use Hugo to generate the HTML site. The HTML site uses Bootstrap
with several ISEAL brand colors gleaned from the corporate website.
