Starting a new skin project is made easy by the use of a generator script that creates a skeleton theme product (Python product on the file system) ready to hold your style elements (stylesheets, images, templates).

The provided example theme can be installed as a standalone product, it is what you get after walking all the way through Alexander Limi's step by step tutorial called Putting a new look on Plone: a real-world example. It is an early version of the skin that is deployed on the plone.net web site.

Full documentation on how to make use of this product, with many pointers to other resources on how the "Skins Tool" and the "Resource Registries" work, can be found in the tutorial about Creating a Custom Style for Plone.