Amazon wishlist subtotal

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Amazon wishlist subtotal",
  "version": "1.2",
  "description": "Creates subtotal for wishlist on Amazon",
  "icons": {
    "128": "icon_dark.png"
  },
  "browser_action": {
    "name": "Dollar sign",
    "default_popup": "popup.html",
    "icons": [
      "icon_dark.png"
    ],
    "default_icon": "icon_dark.png"
  },
  "content_scripts": [
    {
      "css": [
        "styles.css"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "js/content.js",
        "js/color_fade.js"
      ],
      "matches": [
        "https://www.amazon.com/*"
      ]
    }
  ]
}