1. Use the theme selector ({#kb theme_selector::Toggle})
2. Or set it in your `settings.json`:

```json
"theme": {
  "mode": "dark",
  "dark": "One Dark",
  "light": "GitHub Light"
}
```

Create custom themes by creating a JSON file in `~/.config/zed/themes/`. Zed will automatically detect and make available any themes in this directory.

### Using Theme Extensions

Zed supports theme extensions. Browse and install theme extensions from the Extensions panel ({#kb zed::Extensions}).

To create your own theme extension, refer to the [Developing Theme Extensions](./extensions/themes.md) guide.

## Using Language Server Features

### Inlay Hints

Inlay hints provide additional information inline in your code, such as parameter names or inferred types. Configure inlay hints in your `settings.json`:

```json
"inlay_hints": {
  "enabled": true,
  "show_type_hints": true,
  "show_parameter_hints": true,
  "show_other_hints": true
}
```

For language-specific inlay hint settings, refer to the documentation for each language.

### Code Actions

Code actions provide quick fixes and refactoring options. Access code actions using the `editor: Toggle Code Actions` command or by clicking the lightbulb icon that appears next to your cursor when actions are available.

### Go To Definition and References

Use these commands to navigate your codebase:

- `editor: Go to Definition` (<kbd>f12|f12</kbd>)
- `editor: Go to Type Definition` (<kbd>cmd-f12|ctrl-f12</kbd>)
- `editor: Find All References` (<kbd>shift-f12|shift-f12</kbd>)

### Rename Symbol

To rename a symbol across your project:

1. Place your cursor on the symbol
2. Use the `editor: Rename Symbol` command (<kbd>f2|f2</kbd>)
3. Enter the new name and press Enter

These features depend on the capabilities of the language server for each language.

When renaming a symbol that spans multiple files, Zed will open a preview in a multibuffer. This allows you to review all the changes across your project before applying them. To confirm the rename, simply save the multibuffer. If you decide not to proceed with the rename, you can undo the changes or close the multibuffer without saving.

### Hover Information

Use the `editor: Show Hover` command to display information about the symbol under the cursor. This often includes type information, documentation, and links to relevant resources.

### Workspace Symbol Search

The `workspace: Open Symbol` command allows you to search for symbols (functions, classes, variables) across your entire project. This is useful for quickly navigating large codebases.

### Code Completion

Zed provides intelligent code completion suggestions as you type. You can manually trigger completion with the `editor: Show Completions` command. Use <kbd>tab|tab</kbd> or <kbd>enter|enter</kbd> to accept suggestions.

### Diagnostics

Language servers provide real-time diagnostics (errors, warnings, hints) as you code. View all diagnostics for your project using the `diagnostics: Toggle` command.