Developed a comprehensive theming update for the fastrepl/hyprnote repository, focusing on implementing Dark Mode and a semantic color token system to enhance user interface consistency and accessibility. Leveraging JavaScript and React, the work introduced support for light, dark, and system appearance modes, improving contrast and aligning with accessibility standards. The update established a scalable architecture for color tokens, simplifying future theming changes and UI refinements. By addressing UI inconsistencies across themes and preparing the codebase for easier maintenance, the developer ensured that the application’s front end remains adaptable and accessible, with a clear path for ongoing design improvements.