Examine source code of theme elePHPant

{
  "description": "View elePHPant in the header of browser",
  "manifest_version": 2,
  "name": "theme elePHPant",
  "version": "1.0.2",
  "homepage_url": "https://github.com/hellosct1/theme-dynamic",
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "web_accessible_resources": [
    "resource/*"
  ],
  "permissions": [
    "theme"
  ]
}