Haolong developed a themeable command-line interface for the NousResearch/hermes-agent repository, focusing on dynamic color resolution to enhance customization and maintainability. Using Python and leveraging ANSI escape codes, Haolong refactored the CLI’s color handling by replacing hardcoded color constants with a system that resolves colors dynamically from the active skin engine. This approach enabled per-theme control over diff colors, banners, status lines, and session notifications, ensuring a consistent user experience across different themes. The work demonstrated depth in CLI development, customization, and theming, addressing UI drift and improving branding flexibility while laying groundwork for future extensibility and maintainability.