---
title: "MRGB"
url: "https://help.maxon.net/zbp/en-us/Content/html/5_sculpting-and-painting_brush-4-mrgb.html"
section_path: "Sculpting | Modeling | Painting > Brush Customization > MRGB"
description: "Material (M), color (RGB), or MRGB (material and color) are channels that define what information applies to the model surface. The Intensity parameter …"
---

# MRGB

Material (M), color (RGB), or MRGB (material and color) are channels that define what information applies to the model surface. The **Intensity** parameter defines intensity for selected MRGB channels.

![Image: 2024-5-sculpting-painting-brush-customization-mrgb-header.png](https://help.maxon.net/zbp/en-us/Content/Resources/Images/2024-5-sculpting-painting-brush-customization-mrgb-header.png)

> **Note:** You can assign MRGB to a sculpting or painting brush for manual application to the surface. Alternatively, you can apply a **FillObject** action with selected channels.
>
> **FillObject** can be found in the left canvas toolbar's **Color** menu.

---

## M

Toggle on to paint the model with the selected **Material**.

[Video: 2024-5-sculpting-painting-brush-customization-m-channel-example.mp4](https://help.maxon.net/zbp/en-us/Content/Resources/Videos/2024-5-sculpting-painting-brush-customization-m-channel-example.mp4)

> **Note:** Choose a base material and **FillObject** with the M channel active before painting with other materials.

## RGB

Activate RGB to paint the selected color as Polypaint.

[Video: 2024-5-sculpting-painting-brush-customization-rgb-example.mp4](https://help.maxon.net/zbp/en-us/Content/Resources/Videos/2024-5-sculpting-painting-brush-customization-rgb-example.mp4)

## MRGB

Activate Material and RGB channels to apply both channels.

[Video: 2024-5-sculpting-painting-brush-customization-mrgb-channel-example.mp4](https://help.maxon.net/zbp/en-us/Content/Resources/Videos/2024-5-sculpting-painting-brush-customization-mrgb-channel-example.mp4)

> **Important:** When MRGB is used, the RGB channel color may appear less visible due to the material properties overlaying RGB information.

## A

Activate Alpha to use the selected alpha shape for defining the paint stroke on the surface.

[Video: 2024-5-sculpting-painting-brush-customization-a-channel-example.mp4](https://help.maxon.net/zbp/en-us/Content/Resources/Videos/2024-5-sculpting-painting-brush-customization-a-channel-example.mp4)

> **Note:** M, RGB, or MRGB must be active to produce a result.