> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omni.co/llms.txt
> Use this file to discover all available pages before exploring further.

# customTheme

> Defines custom theme properties for styling embedded dashboards.

In the **Embed URL Builder**, this is the **Custom theme** field.

## Syntax

```markdown theme={null}
customTheme=<encoded_theme_object>
```

## Properties

<ParamField path="customTheme" type="object">
  An object containing theme properties and their values. Values must be a valid [theme property](/embed/customization/themes).
</ParamField>

## Examples

The following example demonstrates what the URL encoded version of `customTheme={"dashboard-background":"blue"}` would be:

```markdown wrap title="Example customTheme" theme={null}
customTheme=%7B%22dashboard-background%22%3A%22blue%22%7D
```