Alabaster is a visually (c)lean, responsive, configurable theme for the Sphinx documentation system. It is Python 2+3 compatible.It began as a third-party theme, and is still maintained separately, but as of Sphinx 1.3, Alabaster is an install-time dependency of Sphinx and is selected as the default theme.
Alabaster is a modified (with permission) version of Kenneth Reitz's "krTheme" Sphinx theme (it's the one used in his Requests project). Kenneth's theme was itself originally based on Armin Ronacher's Flask theme. Many thanks to both for their hard work.
Alabaster is available via the PyPI package manager.