---
url: "https://vueda.dev/v3/reference/api/js/use/themeRegistry/functions/overrideTheme.md"
title: "overrideTheme"
---

# overrideTheme

## Overview

Merge project overrides above the base theme regardless of registration order.
Later calls combine classes and replace explicit compose lists. Component-level
loaders belong in the base registry; overrides contain component theme data,
including function-valued slots and classes.

## Signature

`overrideTheme(partialTheme)`

### Parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| <span id="param-partialTheme">partialTheme</span> | [ThemeObject](/v3/reference/api/js/use/useTheme/types/ThemeObject.md) | yes | Project theme overrides. |

### Returns

`void`

## Source

`client/lib/use/themeRegistry.js:230`