Replit has introduced Dark Mode, a new theme option available to all users, enhancing user experience across its platform. This feature is part of a broader effort to revamp Replit's design system, involving a restructuring of CSS variables and the development of reusable components and visual utilities. The update not only aims to prevent eye strain in low-light conditions but also lays the groundwork for future customization options, such as personal or team-specific themes. Alongside aesthetic enhancements, the redesign focuses on improving accessibility by ensuring higher contrast in color tokens and incorporating accessibility best practices into the components, facilitating the creation of high-contrast and colorblind-friendly themes.