In July 2025, Exyxz enhanced the catppuccin/userstyles repository by delivering a feature that aligns ArchWiki theming with user system color schemes. Using CSS and Less, Exyxz updated selectors to detect and respect both site-configured and system-level light or dark preferences, ensuring the Catppuccin theme displays consistently across ArchWiki pages. This work addressed visual inconsistencies and reinforced adherence to the design system, improving the user experience for those switching between color modes. The implementation included clear commit messaging to support future maintenance. The depth of the contribution lies in its careful integration with existing site configurations and user expectations.