Charcoal这个插件主要针对Facebook的Messenger可以使用夜间模式。
Unofficial Messenger dark mode. Easily swap between dark and light mode.
Use Charcoal to experience Messenger in dark mode. Toggling dark mode with any theme is easy: click on the Messenger icon on the top left of the web page, and set your preference.

Updated to work with Messenger's redesigned UI.

Features:
Messenger icon toggle on the top left of the web page to access preferences.
Choose between 3 themes: Charcoal, Midnight, and Deep Blue.
Toggle the extension on or off entirely, whenever you want.

Charcoal v1.2.6

上次更新日期：2020年9月5日
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Charcoal Dark Mode for Messenger v1.4.2.0

上次更新日期：2021年5月10日