Mark Dotto developed and delivered the Pierre Theme, featuring both light and dark modes, for the zed-industries/extensions repository. His work focused on enhancing user interface customization by integrating theme assets sourced from the Pierre app and aligning them with established VS Code and Cursor theme conventions. Utilizing Git submodules and front end development skills, Mark ensured seamless integration into the existing extensions framework. The implementation, completed in March 2026, improved accessibility and allowed users to tailor their experience without introducing new bugs. This contribution strengthened theming consistency and user satisfaction, demonstrating careful attention to cross-platform design and maintainability.