During January 2026, Ywh developed the Formosa Color Theme for the zed-industries/extensions repository, introducing four theme variants inspired by the Porsche 911 Carrera T’s Formosa specification. Leveraging UI/UX design and front end development skills, Ywh implemented robust theme-switching logic using TOML to ensure accessibility and visual consistency across both light and dark modes. The work expanded the design system to support brand-driven theming, enabling future scalability for additional themes. No bugs were recorded during this period, reflecting careful attention to color accessibility and cross-mode compatibility. The update enhanced user customization options and strengthened brand alignment within the extension suite.