Examine source code of GregMat Buddy

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    "128": "icon/128.png"
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  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "GregMat Buddy",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html"
  },
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    {
      "matches": [
        "*://*.gregmat.com/*",
        "*://*.prepswift.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    },
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      "matches": [
        "*://*.gregmat.com/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/gregmat.js"
      ]
    },
    {
      "matches": [
        "*://*.prepswift.com/*"
      ],
      "js": [
        "content-scripts/prepswift.js"
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  "browser_specific_settings": {
    "gecko": {
      "id": "{d4f83f8b-1cc8-49d9-b294-2584fafaefee}"
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