Examine source code of AntiFlatNiconico

{
  "manifest_version": 2,
  "name": "AntiFlatNiconico",
  "version": "1.1",
  "icons": {
    "18": "icons/icon18.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.nicovideo.jp/*"
      ],
      "js": [
        "commonStyle.js",
        "headerStyle.js",
        "topPageStyle.js",
        "changeFavicon.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.nicovideo.jp/watch*"
      ],
      "js": [
        "videoPageStyle.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.nicovideo.jp/watch*"
      ],
      "js": [
        "videoPageAction.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.nicovideo.jp/my*",
        "*://*.nicovideo.jp/user*"
      ],
      "js": [
        "userPageStyle.js",
        "userPageAction.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.nicovideo.jp/search*",
        "*://*.nicovideo.jp/tag*"
      ],
      "js": [
        "searchPageStyle.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.nicovideo.jp/garage*"
      ],
      "js": [
        "garagePageStyle.js"
      ],
      "run_at": "document_end"
    }
  ]
}