What it does
Injects a CSS layer on top of espn.com that re-themes the entire site. Tested on the live scoreboard, NFL/NBA/MLB pages, team pages, articles and the video player chrome.
How to use it
- Install the extension.
- Open any page on espn.com — the theme applies on load.
- Click the extension icon to toggle the theme on or off per-tab.
Browser support
Built for Chromium-based browsers — Chrome, Edge, Brave, Arc, Opera. Loaded as an unpacked extension from the GitHub repo (no Web Store listing yet).