Worked on enhancing the shadcn-ui/ui repository by delivering OS-aligned theming for the NativeSelect component, specifically targeting options and optgroups. Implemented system color theming using TypeScript and React, updating NativeSelectOption and NativeSelectOptGroup to leverage system color variables for both background and text. This approach improved accessibility and ensured visual consistency across platforms by aligning with each operating system’s color scheme. The update reduced the complexity of custom theming, centralizing color management and lowering ongoing maintenance for theme overrides. The work demonstrated focused front end development, emphasizing code hygiene and predictable cross-platform behavior within a single, targeted feature update.