Simple Gray Scrollbar

manifest.json

{
  "update_url": "http://clients2.google.com/service/update2/crx",
  "name": "Simple Gray Scrollbar",
  "version": "2.7.6",
  "description": "Minimalistic scrollbar replacement for chrome",
  "icons": {
    "48": "icon48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "scrollbar.css"
      ],
      "all_frames": true
    }
  ],
  "manifest_version": 2
}