Twitter Blues

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Twitter Blues",
  "description": "This extension changes Twitter's new garish white background to something easier on the eyes. Now includes custom color picker!",
  "version": "0.2.3",
  "icons": {
    "48": "icon48.png"
  },
  "permissions": [
    "tabs",
    "https://*.twitter.com/*",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icon19.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.twitter.com/*"
      ],
      "js": [
        "updatepage.js"
      ],
      "run_at": "document_start"
    }
  ]
}