Nocturne — Site Color Tuner

Retune any website's background, text and border colors

Nocturne lets you retune the colors of any website — backgrounds, text, and borders — to make long reading and browsing sessions easier on your eyes. How it works: - Open the popup on any site and Nocturne scans every color currently in use. - Tap "Suggest a high-contrast palette" for an instant, readable alternative to the site's current colors, or adjust any color yourself with the color pickers. - Save your changes as a named palette — create as many as you like per site (e.g. "Warm Dim," "Night Reading") and switch between them anytime. - Your active palette is automatically re-applied the next time you visit that site. Nocturne only affects the site you choose to tune. Every other tab and website keeps its original colors untouched. All palettes are stored locally on your device. Nocturne does not collect, transmit, or share any data, and does not load or run any remote code.