Mozilla Hacks | Dynamic Themes in Firefox @mozhacks | Uploaded 6 years ago | Updated 1 day ago
Make your own dynamic theme? Enter it into the Quantum Extensions Challenge and show it off! https://extensionschallenge.com/

Dynamic themes allow extensions to programmatically modify the browser UI's color scheme and apply background images.

Here's the code for the theme I built: https://github.com/potch/reader-theme

Docs for the theme API: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/theme

Submit your extension for a chance to get your add-on promoted to all Firefox users.