During July 2025, this developer enhanced the momentum-design/momentum-ui repository by implementing ::part pseudo-element support for radio button inputs within the web components library. Using TypeScript and front end development skills, they enabled external styling of radio inputs from outside the shadow DOM by exposing a single, stable attribute. This approach simplified theming and customization for customers and design teams, reducing friction when adapting UI components to different brands. The work aligned with design-system goals for improved theming portability and faster handoff, with clear traceability through ticket-linked commits and seamless integration into the existing web components codebase. No bugs were reported.