During January 2026, Daniel Schumin developed UI theme support for the catppuccin/nix repository, focusing on configuration management using the Nix language. He introduced a new settings format that enabled users to configure Light and Dark Mode themes, centralizing theme management for improved consistency and user experience. Daniel migrated existing vicinae settings to this new format, ensuring reliable theme persistence across updates. His work included refining code style and indentation to align with project standards, which enhanced maintainability. Although the scope was limited to a single feature, the changes addressed configuration reliability and usability within the context of Nix-based systems.