Examine source code of Pigmnts

{
  "manifest_version": 2,
  "name": "Pigmnts",
  "description": "Create visually appealing color palettes from any image on the web!",
  "version": "1.0.0",
  "author": "Akash Hamirwasia",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "js/content.js"
      ],
      "css": [
        "css/global.css"
      ]
    }
  ],
  "browser_action": {
    "default_title": "Pigmnts"
  },
  "permissions": [
    "tabs",
    "storage",
    "unlimitedStorage",
    "contextMenus",
    "downloads",
    "https://*/*",
    "http://*/*"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  }
}