Glitter

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Glitter",
  "version": "2.0.0",
  "description": "25+ customizable themes for Twitter. Add your own flair to Twitter with an easy-to-use theme editor.",
  "short_name": "Glitter",
  "icons": {
    "16": "img/glitter.png",
    "48": "img/glitter.png",
    "128": "img/glitter.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "cookies",
    "*://twitter.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://twitter.com/*"
      ],
      "css": [
        "css/override.css"
      ],
      "js": [
        "js/twitter.js"
      ]
    }
  ],
  "browser_action": {
    "default_title": "Customize Twitter",
    "default_popup": "popup.html"
  }
}