github contributions paint

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_appName__",
  "short_name": "__MSG_appShortName__",
  "description": "__MSG_appDescription__",
  "version": "1.0.1",
  "manifest_version": 2,
  "default_locale": "en",
  "permissions": [
    "storage",
    "tabs",
    "http://github.com/*",
    "https://github.com/*"
  ],
  "browser_action": {
    "default_title": "Change colors.",
    "default_icon": "images/icon-16.png",
    "default_popup": "pages/popup.html"
  },
  "icons": {
    "16": "images/icon-16.png",
    "128": "images/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://github.com/*"
      ],
      "js": [
        "scripts/paint.js",
        "scripts/control-theme.js"
      ],
      "css": [
        "styles/inject.css"
      ]
    }
  ]
}