Although there are thousands of WordPress themes out in the wild, we will be initially making available only a small collection of "curated" themes. These themes will have a small amount of Princeton University branding. Most will be minimalist, with neutral colors, and some will have configurable options. As the service grows, so will our theme offerings.
However, site owners sometimes want to deviate from the default appearance of the themes, or they might (for some inexplicable reason) want to eliminate all traces of orange and black. Sites in our Roxen CMS environment have the custom.css file, and we wanted to offer a similar option with WordPress.
Fortunately, Automattic, the commercial entity behind WordPress.com, created a plugin that provides this feature. Site admins will find an "Edit CSS" menu under the Appearance section in the left navigation of wp-admin.