Examine source code of Dark Theme for Reddit

{
  "manifest_version": 2,
  "version": "0.1.1resigned1",
  "name": "Dark Theme for Reddit",
  "description": "Simple flat dark grey theme for Reddit..",
  "permissions": [
    "storage"
  ],
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.reddit.com/*"
      ],
      "js": [
        "data/inject.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "data/themes/*.css"
  ],
  "icons": {
    "16": "data/icons/16.png",
    "19": "data/icons/19.png",
    "32": "data/icons/32.png",
    "38": "data/icons/38.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png"
  },
  "homepage_url": "http://add0n.com/dark-theme.html?from=reddit",
  "browser_action": {
    "default_icon": {
      "16": "data/icons/16.png",
      "19": "data/icons/19.png",
      "32": "data/icons/32.png",
      "38": "data/icons/38.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{da883fd3-67d2-4791-b286-62becf715676}"
    }
  }
}