> For the complete documentation index, see [llms.txt](https://docs.flatredball.com/gum/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flatredball.com/gum/gum-tool/gum-elements/coloredrectangle.md).

# ColoredRectangle

{% hint style="warning" %}
**ColoredRectangle is being phased out.** Use the **Rectangle** standard element instead — Rectangle covers the same solid-color fill (through its `Fill Color`) plus an outline, gradients, drop shadows, dashed strokes, and rounded corners. New projects seed Rectangle rather than ColoredRectangle. ColoredRectangle remains available so existing projects keep working, but it will be removed in a future release.
{% endhint %}

### Introduction

ColoredRectangles are used to display solid color rectangles. It can be used to provide a solid colored background or placeholders for content such as Sprites. ColoredRectangles are also useful for quickly blocking out a UI or learning about Gum's layout with a visual object.

As the name suggests, ColoredRectangles have a Color property which can be modified.

<figure><img src="/files/byWSU6ZI1q6pTn1BtuvH" alt=""><figcaption><p>ColoredRectangle with a green color</p></figcaption></figure>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.flatredball.com/gum/gum-tool/gum-elements/coloredrectangle.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
