# Theme Settings > Customize your documentation site's color palette, logos, and dark mode appearance. Source: https://docs.doccupine.com/platform/theme-settings > For the complete documentation index, see [llms.txt](https://docs.doccupine.com/llms.txt). # Theme Settings The Theme settings page gives you full control over your documentation site's visual appearance. Customize colors, upload logos, and configure separate light and dark mode palettes. ## Color palette The theme system uses an 18-color palette organized into groups: - **Primary** (light, base, dark) - your brand's main color, used for links, buttons, and accents - **Secondary** (light, base, dark) - complementary color for secondary elements - **Tertiary** (light, base, dark) - additional accent color - **Gray** (light, base, dark) - neutral tones for text, borders, and backgrounds - **Status colors** (success, error, warning, info) - used for callouts and status indicators - **Base colors** (dark, light) - the core background and foreground colors Click any color swatch to open a color picker and adjust the value. ## Dark mode Enable the dark mode toggle to configure a separate palette for dark mode. When enabled, your site automatically switches based on the visitor's system preference. The dark mode palette uses the same 18-color structure, letting you fine-tune every color for both appearances. ## Logos Upload separate logo images for light and dark backgrounds: - **Light background logo** - shown when the site is in light mode - **Dark background logo** - shown when the site is in dark mode If you only upload one logo, it will be used for both modes. ## Reset to defaults Each palette section has a **Reset to defaults** button that restores the original Doccupine color values. This is useful if you want to start over after experimenting. ## How it works Theme settings are stored in `theme.json` at the root of your repository. Like all configuration, changes are staged as pending and go live when you publish.