A theme is a collection of tokens that define the visual appearance of a product or brand. All ODS products and brands share the same thematic base definition, although there is the possibility of extended token definitions for a country's needs, within its own libraries (i.e. country-specific tokens).

A theme system is a set of color swatches and interchangeable styles that affect the way things are displayed (think background color, text color or border color, spacing, corner radius), but not content, hierarchy, etc. Simply put, theming allows us to code a component once but design it in multiple ways.

The context theme is applied to a container to which the Regular or Alternative theme has been applied, and depending on that context the components that are positioned within it change to enhance contrast.