Is Dark Background and Light Text safe?

Dark Background and Light Text modifies Content-Security-Policy and CORS headers on every page to enable its dark-mode style injection.

The extension intercepts HTTP response headers on all websites to strip or weaken style-src CSP directives and inject 'unsafe-inline', allowing it to apply custom dark-mode CSS on any page. It also rewrites Access-Control-Allow-Origin headers on stylesheet responses so cross-origin CSS can be fetched and recolored. No user data is transmitted to external servers; all processing is local within the browser.