Overview of options:

Option Default Description
enabled true Enable theme
style metal Default Style to load
toolbar.breadcrumbs true Enable breadcrumbs in toolbar true Enable search-field in toolbar
toolbar.navigation true Enable navigation-drawer in toolbar
css true Load theme's CSS
js true Load theme's JS
itemize true Assign indices to paragraphs
linked_data true Generated Linked Data
highlighter true Highlight code
highlighter_theme enlighter Theme for highlighter
components [List] List of components to enable
router true Enable dynamic routes
routes [Dict] Key-value list of routes
api [Dict] Hierarchical key-value list of classes to use
flexsearch [Dict] Options for FlexSearch
flexsearch.enabled true Enable FlexSearch

Most are configurable from the Admin interface.