docs: edit theme doc

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title: Themes
---
With opencode you can select from one of several built-in themes, use a theme that adapts to your terminal theme, or define your own custom theme.
By default, opencode uses our own `opencode` theme.
---
## Built-in themes
opencode comes with several built-in themes.
| Name | Description |
| --- | --- |
| `system` | Adapts to your terminal's background color |
| `tokyonight` | Based on the Tokyonight theme |
| `everforest` | Based on the Everforest theme |
| `ayu` | Based on the Ayu dark theme |
| `catppuccin` | Based on the Catppuccin theme |
| `gruvbox` | Based on the Gruvbox theme |
| `kanagawa` | Based on the Kanagawa theme |
| `nord` | Based on the Nord theme |
| `matrix` | Hacker-style green on black theme |
| `one-dark` | Based on the Atom One Dark theme |
And more, we are constantly adding new themes.
---
## System theme
The `system` theme is designed to automatically adapt to your terminal's color scheme. Unlike traditional themes that use fixed colors, the _system_ theme:
- **Generates gray scale**: Creates a custom gray scale based on your terminal's background color, ensuring optimal contrast.
- **Uses ANSI colors**: Leverages standard ANSI colors (0-15) for syntax highlighting and UI elements, which respect your terminal's color palette.
- **Preserves terminal defaults**: Uses `none` for text and background colors to maintain your terminal's native appearance.
The system theme is for users who:
- Want opencode to match their terminal's appearance
- Use custom terminal color schemes
- Prefer a consistent look across all terminal applications
---
## Using a theme
You can select a theme by bringing up the theme select with the `/theme` command. Or you can specify it in your [config](/docs/config).
```json title="opencode.json" {3}
{
"$schema": "https://opencode.ai/config.json",
"theme": "tokyonight"
}
```
---
## Custom themes
opencode supports a flexible JSON-based theme system that allows users to create and customize themes easily.
## Theme Loading Hierarchy
### Hierarchy
Themes are loaded from multiple directories in the following order (later directories override earlier ones):
Themes are loaded from multiple directories in the following order where later directories override earlier ones:
1. **Built-in themes** - Embedded in the binary
2. **User config directory** - `~/.config/opencode/themes/*.json` (or `$XDG_CONFIG_HOME/opencode/themes/*.json`)
3. **Project root directory** - `<project-root>/.opencode/themes/*.json`
4. **Current working directory** - `./.opencode/themes/*.json`
1. **Built-in themes** - These are embedded in the binary
2. **User config directory** - Defined in `~/.config/opencode/themes/*.json` or `$XDG_CONFIG_HOME/opencode/themes/*.json`
3. **Project root directory** - Defined in the `<project-root>/.opencode/themes/*.json`
4. **Current working directory** - Defined in `./.opencode/themes/*.json`
If multiple directories contain a theme with the same name, the theme from the directory with higher priority will be used.
## Creating a Custom Theme
### Creating a theme
To create a custom theme, create a JSON file in one of the theme directories:
To create a custom theme, create a JSON file in one of the theme directories.
For user-wide themes:
```bash no-frame
# For user-wide themes
mkdir -p ~/.config/opencode/themes
vim ~/.config/opencode/themes/my-theme.json
```
# For project-specific themes
And for project-specific themes.
```bash no-frame
mkdir -p .opencode/themes
vim .opencode/themes/my-theme.json
```
## Theme JSON Format
### JSON format
Themes use a flexible JSON format with support for:
@ -37,11 +99,13 @@ Themes use a flexible JSON format with support for:
- **ANSI colors**: `3` (0-255)
- **Color references**: `"primary"` or custom definitions
- **Dark/light variants**: `{"dark": "#000", "light": "#fff"}`
- **No color**: `"none"` - Uses the terminal's default color (transparent)
- **No color**: `"none"` - Uses the terminal's default color or transparent
### Example Theme
### Example
```json no-frame
Here's an example of a custom theme:
```json title="my-theme.json"
{
"$schema": "https://opencode.ai/theme.json",
"defs": {
@ -267,51 +331,13 @@ Themes use a flexible JSON format with support for:
}
```
### Color Definitions
### Color definitions
The `defs` section (optional) allows you to define reusable colors that can be referenced in the theme.
The `defs` section is optional and it allows you to define reusable colors that can be referenced in the theme.
### Using "none" for Terminal Defaults
### Terminal defaults
The special value `\"none\"` can be used for any color to inherit the terminal's default color. This is particularly useful for creating themes that blend seamlessly with your terminal's color scheme:
- `\"text\": \"none\"` - Uses terminal's default foreground color
- `\"background\": \"none\"` - Uses terminal's default background color
## The System Theme
The `system` theme is designed to automatically adapt to your terminal's color scheme. Unlike traditional themes that use fixed colors, the system theme:
- **Generates gray scale**: Creates a custom gray scale based on your terminal's background color, ensuring optimal contrast
- **Uses ANSI colors**: Leverages standard ANSI colors (0-15) for syntax highlighting and UI elements, which respect your terminal's color palette
- **Preserves terminal defaults**: Uses `none` for text and background colors to maintain your terminal's native appearance
The system theme is ideal for users who:
- Want opencode to match their terminal's appearance
- Use custom terminal color schemes
- Prefer a consistent look across all terminal applications
## Built-in Themes
opencode comes with several built-in themes:
- `system` - Default theme that dynamically adapts to your terminal's background color
- `tokyonight` - Tokyonight theme
- `everforest` - Everforest theme
- `ayu` - Ayu dark theme
- `catppuccin` - Catppuccin theme
- `gruvbox` - Gruvbox theme
- `kanagawa` - Kanagawa theme
- `nord` - Nord theme
- `matrix` - Hacker-style green on black theme
- `one-dark` - Atom One Dark inspired theme
## Using a Theme
To use a theme, set it in your opencode configuration or select it from the theme dialog in the TUI.
```json title="opencode.json" {3}
{
"$schema": "https://opencode.ai/config.json",
"theme": "tokyonight"
}
```
- `"text": "none"` - Uses terminal's default foreground color
- `"background": "none"` - Uses terminal's default background color