Examine source code of ROBLOX 2016 Theme

{
  "manifest_version": 2,
  "name": "ROBLOX 2016 Theme",
  "description": "Get ROBLOX to look like how it was back in 2016!",
  "version": "1.0.2",
  "permissions": [
    "activeTab",
    "tabs",
    "notifications",
    "storage"
  ],
  "browser_action": {
    "default_popup": "/popup.html",
    "default_icon": {
      "32": "images/logo1.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.roblox.com/*"
      ],
      "js": [
        "js/background.js",
        "js/changebuttons.js",
        "js/settheme.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "rblx2016@ro6bot.gq",
      "strict_min_version": "82.0"
    }
  }
}