> ⚠️ Only the enabled languages on this [file](https://github.com/verdaccio/verdaccio/blob/master/packages/plugins/ui-theme/src/i18n/enabledLanguages.ts) are available, you can contribute by adding new more languages. The default
| gravatar | boolean | No | true | `>v4` | Gravatars will be generated under the hood if this property is enabled |
| sort_packages | [asc,desc] | No | asc | `>v4` | By default private packages are sorted by ascending |
| logo | string | No | `/local/path/to/my/logo.png``http://my.logo.domain/logo.png` | all | a URI where logo is located (header logo) |
| primary_color | string | No | "#4b5e40" | `>4` | The primary color to use throughout the UI (header, etc) |
| scope | string | No | @myscope | `>v3.x` | If you're using this registry for a specific module scope, specify that scope to set it in the webui instructions header |
| darkMode | boolean | No | false | `>=v4.6.0` | This mode is an special theme for those want to live in the dark side |
| favicon | string | No | false | `>=v5.0.1` | Display a custom favicon, can be local resource or valid url |
| rateLimit | object | No | use `userRateLimit` configuration | `>=v5.4.0` | Increase or decrease rate limit, by default is 5k request every 2 minutes, only limit web api endpoints, the CSS, JS, etcc are ingnored |
| pkgManagers | npm, pnpm or yarn | No | npm | `>=v5.5.0` | Allow customise which package managers on the side bar and registry information dialog are visible |
| login | boolean | No | true or false | `>=v5.5.0` | Allow disable login on the UI (also include web endpoints). |
> The `darkMode` can be enabled via UI and is persisted in the browser local storage. If you combine `showThemeSwitch: false` with `darkMode` users will be forced to use an specific theme. Furthermore, also void `primary_color` and dark cannot be customized.