That is the site theme, it is a specific theme for the site.
each theme is contained in its own CSS file, you simply include the CSS file for the theme of your choice.
Configuring themes for your table is covered extensively in the documentation along with examples of each theme in use:
http://tabulator.info/docs/4.1/theme
each theme is contained in its own CSS file, you simply include the CSS file for the theme of your choice.
Configuring themes for your table is covered extensively in the documentation along with examples of each theme in use: http://tabulator.info/docs/4.1/theme