pygal provides 6 different styles and 2 ways to add your own:
You can customize styles in two ways:
You can instantiate the Style class with some customizations for quick styling:
You can also specify a file containing a custom css for more customization. The css option is an array containing included css by default (except from base.css which is always included).
It supports local file names and external stylesheet too, just append your URI in the list.
(See the default css)