Oussama Filani enhanced the Verdaccio repository by delivering a targeted accessibility improvement to the user interface. He addressed color contrast issues on the header WATCH button by introducing a new CSS class, ensuring the button met readability and accessibility standards across themes and devices. Using SCSS and TypeScript, Oussama focused on front-end development and accessibility best practices, aligning the UI with WCAG-like contrast requirements. The solution was validated for consistency and maintainability, and he documented considerations for future enhancements. This work demonstrates a focused approach to solving a specific accessibility problem, with depth in both technical implementation and validation.