- Enable Dark Theme:
DevTools > Settings > Preferences > Appearance > Theme > Select Dark - Show user agent shadow DOM:
DevTools > Settings > Preferences > Elements > Show user agent shadow DOM - Disable cache (while DevTools is open):
DevTools > Settings > Preferences > Network > Disable cache (while DevTools is open) - Auto-open DevTools for popups:
DevTools > Settings > Preferences > DevTools > Auto-open DevTools for popups