chromium/chrome/test/data/extensions/api_test/browser_action/tab_specific_state/manifest.json

{
  "name": "Tab color",
  "version": "1.0",
  "manifest_version": 2,
  "background": {
    "scripts": ["background.js"],
    "persistent": true
  },
  "permissions": [
    "tabs", "http://*/*"
  ],
  "browser_action": {
    "default_icon": "icon1.png",
    "default_title": "hi!"
  }
}