> For the complete documentation index, see [llms.txt](https://buildsystem.eintosti.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://buildsystem.eintosti.de/v4/permissions-and-access/messages.md).

# Chat & Sign Colors

***

## Permission Nodes

### Chat Formatting Colors

Enables formatting text in chat messages using standard color codes (e.g. `&a`, `&l`) or hex color codes (RGB).

* **Permission**: `buildsystem.color.chat`
* **Default**: `OP`

### Sign Formatting Colors

Enables formatting text on signs using color codes or hex RGB formatting.

* **Permission**: `buildsystem.color.sign`
* **Default**: `OP`

### Physics Change Alerts

Controls whether a player receives a chat notification when entering a world that has block physics disabled.

* **Permission**: `buildsystem.physics.message`
* **Default**: `TRUE` (granted to all players)

***

## Supported Color Formats

The chat and sign nodes above unlock the same set of formats. Anything a player types that they lack the permission for is stripped rather than sent through.

| Format               | Syntax                                    | Example                                     |
| -------------------- | ----------------------------------------- | ------------------------------------------- |
| **Legacy codes**     | `&` followed by a code                    | `&aGreen`, `&lBold`                         |
| **Hex**              | `#RRGGBB`                                 | `#ff8800Orange`                             |
| **Hex, braced**      | `{#RRGGBB}`                               | `{#ff8800}Orange`                           |
| **Hex, Spigot form** | `&x&R&R&G&G&B&B`                          | `&x&f&f&8&8&0&0Orange`                      |
| **Solid**            | `<SOLID:RRGGBB>` or `#{RRGGBB}`           | `<SOLID:ff8800>Orange`                      |
| **Gradient**         | `<GRADIENT:RRGGBB>text</GRADIENT:RRGGBB>` | `<GRADIENT:ff0000>Sunset</GRADIENT:0000ff>` |
| **Rainbow**          | `<RAINBOW{saturation}>text</RAINBOW>`     | `<RAINBOW80>Colorful</RAINBOW>`             |

Gradient and rainbow interpolate across the enclosed text, so they need both an opening and a closing tag. The rainbow saturation is a number from 1 to 100.

{% hint style="info" %}
These formats are also accepted anywhere `messages.yml` takes text, independently of these permissions -- the nodes govern what *players* may type, not what you may configure.
{% endhint %}