ColorThief

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "ColorThief",
  "version": "0.2.0",
  "manifest_version": 2,
  "description": "Extracts a color palette from an image",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "images/thief-19.png",
      "38": "images/thief-38.png"
    },
    "default_title": "ColorThief"
  },
  "icons": {
    "16": "images/thief-16.png",
    "48": "images/thief-48.png",
    "128": "images/thief-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "bower_components/jQuery/dist/jquery.min.js",
        "bower_components/jQuery/dist/jquery.min.map",
        "bower_components/handlebars/handlebars.min.js",
        "bower_components/color-thief/dist/color-thief.min.js",
        "content-script.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "web_accessible_resources": [
    "thief.png",
    "control-panel.html",
    "palette.html"
  ]
}