Examine source code of Colext

{
  "manifest_version": 2,
  "name": "Colext",
  "description": "Color webpages for easier reading and less eyestrain!",
  "version": "0.1.1",
  "icons": {
    "32": "res/img/icon_32.png",
    "48": "res/img/icon_48.png",
    "96": "res/img/icon_96.png",
    "128": "res/img/icon_128.png",
    "256": "res/img/icon_256.png",
    "512": "res/img/icon_512.png"
  },
  "options_page": "options.html",
  "options_ui": {
    "page": "options.html"
  },
  "browser_action": {
    "default_icon": "res/img/icon_48.png",
    "default_title": "Colext",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "/res/js/jquery-3.4.1.slim.min.js",
        "res/js/injected.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "unlimitedStorage",
    "tabs",
    "http://*/",
    "https://*/",
    "file:///*"
  ]
}