Examine source code of Beautiful Eggert

{
  "manifest_version": 2,
  "name": "Beautiful Eggert",
  "description": "This extension makes CS Specs at UCLA beautiful because doing the project itself is stressful enough, reading the spec shouldn't be.",
  "version": "1.5",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "author": "rishabhaggarwal.net",
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Make this page beautiful"
  },
  "content_scripts": [
    {
      "matches": [
        "*://web.cs.ucla.edu/classes/*",
        "*://www.lasr.cs.ucla.edu/classes/*",
        "*://yellowstone.cs.ucla.edu/cs143/*",
        "*://isi.deterlab.net/file*"
      ],
      "css": [
        "beautifulEggert.css"
      ]
    }
  ]
}