Moon Eclipse by Evgeny M

Moon Eclipse transforms any website into a comfortable dark theme by injecting carefully crafted CSS rules. No DOM traversal, no MutationObserver, no performance overhead.

Features:
• One-click toggle from the toolbar popup
• Custom background and text colors with a built-in color picker and hex input
• Follow your system theme — auto light/dark that tracks your OS and switches live (macOS, Windows, Linux)
• Daily schedule with overnight range support (e.g. 20:00–06:00)
• Per-site exclusion list — add the current domain in one click
• Solid coverage of site headers and navigation bars, not just page bodies
• Works instantly on page load — no flicker
• Minimal permissions: storage, alarms, activeTab
• No data collection, no analytics, no external network calls

Open source: https://github.com/gdmad/moon-eclipse