== Goal
#Codex **is set out to be themeable** in order to
1. **be used outside of Wikimedia context and**
2. **be adaptable within Wikimedia for different use cases.**
Clarify the use cases and find technical abilities and limitations.
//Stub from here on for now temporarily://
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=== Design documentation
* **Wikimedia Design Style Guide**:
=== Existing implementations
==== Wikimedia
* **Core**
* **OOUI**:
=== Implementation notes
- As theming is a burdensome and error-prone activity, we assume that providing a default theme as fallback and theme overrides might be the designer/developer friendliest solution.
We don't want to end up in a situation, where a themer needs to keep 5000 attributes/tokens in sync with the main theme and has to provide decisions for each and everyone.