Examine source code of Dynamic HEX Theme

{
  "manifest_version": 2,
  "name": "Dynamic HEX Theme",
  "version": "3.1",
  "description": "Advanced Firefox theme customization with presets, save/load/delete options.",
  "permissions": [
    "theme",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js",
      "popup-launcher.js"
    ]
  },
  "browser_action": {
    "default_title": "Theme Picker",
    "default_icon": {
      "16": "icons/16.png",
      "48": "icons/48.png",
      "128": "icons/128.png"
    }
  },
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "applications": {
    "gecko": {
      "id": "firefox-hex-theme@example.com",
      "strict_min_version": "109.0"
    }
  }
}