Worked on the martinvonz/jj repository to implement crossed-out text styling within the CLI color configuration, enhancing the clarity of diff annotations for end users. The solution involved updating the formatter to recognize and render the new attribute using ANSI escape codes, ensuring seamless integration with existing CLI output. Documentation and end-to-end tests were added to support the new feature, providing clear guidance and robust validation. The work was delivered as a focused, well-documented change in Rust, with careful attention to configuration management and code traceability. This update enables more flexible and expressive CLI customization without introducing regressions or complexity.