Anmol Swami enhanced the theming user experience for the ghostty-org/ghostty repository by focusing on stability and maintainability during mouse-driven theme selection. Using Zig and applying UI/UX design principles, Anmol implemented defensive checks to prevent out-of-bounds errors when users select themes with the mouse, reducing the risk of runtime failures. The work included clarifying variable usage by declaring the selection as a constant, which helps prevent unintended mutations and future regressions. This targeted feature improved the robustness of theme selection logic, contributing to a more stable interface and clearer codebase for future backend and frontend development efforts.