AO3 Themes & Dark Mode meadbee מאת

A lightweight Firefox extension that adds site-wide color themes to Archive of Our Own (AO3) without requiring an AO3 account.

• Classic, Dark, Blue, Green, Purple, and Custom themes
• Site-wide styling across AO3
• Custom background, panel, text, link, accent, border, and input colors
• Optional override for author work-skin colors
• One-click reset to default settings
• No analytics, tracking, advertising, remote code, or network requests
• Theme preferences are stored locally in Firefox

AO3 Themes does not collect or transmit personal data, browsing history, page content, or usage analytics.

The extension stores only its theme preferences using Firefox's local extension storage. Those preferences remain on the user's device.