Color Icons for Gmail

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Color Icons for Gmail",
  "version": "1.0.0",
  "manifest_version": 2,
  "description": "This extension will replace monochrome icons in Gmail themes with color ones.",
  "homepage_url": "https://github.com/jzsfkzm/color-icons-for-gmail",
  "icons": {
    "16": "images/icons/icon16.png",
    "48": "images/icons/icon48.png",
    "128": "images/icons/icon128.png"
  },
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "js": [
        "jquery-2.1.3.min.js",
        "underscore-1.8.3.min.js",
        "script.js"
      ],
      "matches": [
        "*://mail.google.com/*"
      ]
    }
  ],
  "options_page": "options.html",
  "web_accessible_resources": [
    "images/light.png",
    "images/dark.png",
    "underscore-1.8.3.min.map",
    "images/iconsets/light/icons8-archive-21.png",
    "images/iconsets/light/icons8-archive-42.png",
    "images/iconsets/light/icons8-tag-21.png",
    "images/iconsets/light/icons8-tag-42.png",
    "images/iconsets/light/icons8-move-21.png",
    "images/iconsets/light/icons8-move-42.png",
    "images/iconsets/light/icons8-spam-21.png",
    "images/iconsets/light/icons8-spam-42.png",
    "images/iconsets/dark/icons8-archive-21.png",
    "images/iconsets/dark/icons8-archive-42.png",
    "images/iconsets/dark/icons8-tag-21.png",
    "images/iconsets/dark/icons8-tag-42.png",
    "images/iconsets/dark/icons8-move-21.png",
    "images/iconsets/dark/icons8-move-42.png",
    "images/iconsets/dark/icons8-spam-21.png",
    "images/iconsets/dark/icons8-spam-42.png"
  ],
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'"
}