Examine source code of Text Color Changer

{
  "manifest_version": 2,
  "name": "Text Color Changer",
  "version": "1.0",
  "description": "Change the text color on the current webpage.",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{95efdb1a-3cb6-44f7-8826-acba2a2c586a}"
    }
  }
}