Story

As a RHDH admin (customer or partner), I want to customize and override options from the RHDH theme package. To align the effort we should have an "API design doc" (that Yi already prepared).

Background

Dependencies and Blockers

Acceptance Criteria

1. A doc that provides a good understanding what options we want to provide in the future.
2. A doc that takes care of the maintainability and backward compatibility of the theme.