---
title: browserAction.ColorArray
slug: Mozilla/Add-ons/WebExtensions/API/browserAction/ColorArray
tags:
  - API
  - Add-ons
  - ColorArray
  - Extensions
  - Non-standard
  - Reference
  - Type
  - WebExtensions
  - browserAction
browser-compat: webextensions.api.browserAction.ColorArray
---
{{AddonSidebar()}}

## Type

An `array` of four integers in the range 0-255, defining an RGBA color. The four values specify the following channels:

1. Red
2. Green
3. Blue
4. Alpha (opacity).

For example, opaque red is `[255, 0, 0, 255]`.

## Browser compatibility

{{Compat}}

{{WebExtExamples}}

> **Note:** This API is based on Chromium's [`chrome.browserAction`](https://developer.chrome.com/extensions/browserAction#type-ColorArray) API. This documentation is derived from [`browser_action.json`](https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/api/browser_action.json) in the Chromium code.
>
> Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.

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