Examine source code of Blueify

{
  "manifest_version": 2,
  "name": "Blueify",
  "version": "1.1",
  "description": "Adds a nice matching border to op.gg and leagueofgraphs pages!",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.op.gg/*"
      ],
      "js": [
        "opgg.js"
      ]
    },
    {
      "matches": [
        "https://www.leagueofgraphs.com/*"
      ],
      "js": [
        "leagueofgraphs.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3791d177-480c-4af6-92cd-25b1dc2a320c}"
    }
  }
}