> For the complete documentation index, see [llms.txt](https://help.mimeeq.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.mimeeq.com/configurator/rules/actions/material-override.md).

# Material Override Parameters

Dynamically modify material properties — colour, texture, roughness, and more — without creating multiple materials.

The **Override Material Parameters** action lets you modify material properties dynamically in response to triggers. Use it to change colours, swap textures, or adjust material attributes without creating separate materials for each variation.

## When to use it

* You need many colour or texture variations for the same component.
* You want to change material properties based on user selections.
* You want to connect a colour picker to a material.
* You want to avoid maintaining large numbers of near-identical materials.

## Setting up the action

### Step 1: Create the action

1. Go to the **Rules** section in your configurator.
2. Create a new rule and select **Override Material Parameters** as the action type.
3. Set a trigger and configure execution timing (Always, On load, or After load).

### Step 2: Select target meshes

Choose which meshes will have their material properties overridden.

![Selecting target meshes for material override](https://621103948-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsqWfi8ifBhTdkvf1vOlY%2Fuploads%2FZ4rwR4YmWsAPafGqtTtE%2Fseelect-meshes-main-action-scr_1mw14jq.png?alt=media)

### Step 3: Configure material parameters

Click **Set Material** to open the material override modal. You can modify:

* Albedo colour and texture
* Metallic texture and factor
* Roughness
* Normal map
* And other material properties

Modified parameters are marked with a green tag.

![Material override parameter modal](https://621103948-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsqWfi8ifBhTdkvf1vOlY%2Fuploads%2FdZHGCZ914EfdVGTcjE9Y%2Foverride-material-paremeters-s_gxu34d.png?alt=media)

## Common use cases

### Dynamic colour changes

Override the albedo (base) colour of a material:

1. Select the target meshes.
2. Open the material parameter modal.
3. Modify the **Albedo colour**.
4. Save your changes.

### Connecting to a colour picker

1. Enable **Set colour from a colour picker**.
2. Select your colour picker source.
3. Set a trigger that activates when the colour picker is used.

This allows customers to choose any colour rather than selecting from predefined options.

### Texture switching

{% tabs %}
{% tab title="Static override" %}

1. Select **Override Albedo Texture**.
2. Choose **Static** mode.
3. Select the replacement texture.
   {% endtab %}

{% tab title="Dynamic override" %}

1. Select **Override Albedo Texture**.
2. Choose **Dynamic** mode.
3. Define a pattern using curly brackets to reference option codes — for example, `{optionCode}.jpg`.
   {% endtab %}
   {% endtabs %}

### Managing large material libraries

Dynamic texture override can reduce setup time significantly when working with large material sets:

1. Upload textures to the media library (filenames must not contain spaces).
2. Create an option set for your textures.
3. Bulk-add textures to the option set.
4. Create one material override rule referencing the option codes.

The system then loads the corresponding texture automatically when options change — letting you manage 100+ materials through a single rule.

![Dynamic texture override configuration](https://621103948-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsqWfi8ifBhTdkvf1vOlY%2Fuploads%2FbEenS9SCv8NWGwSpxAkD%2Foverride-alebdo-texture-option_1hmg5m5.png?alt=media)

{% hint style="success" %}
**Best practices**

* Ensure texture filenames contain no spaces.
* Keep textures for dynamic overrides in a dedicated folder.
  {% endhint %}

## Related articles

* [Rules Overview](/configurator/rules/overview.md)
* [Actions Overview](/configurator/rules/actions.md)


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