Let's get color blind

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Let's get color blind",
  "short_name": "Let's get color blind",
  "version": "1.0.2",
  "author": "Hilbert Eikelboom",
  "manifest_version": 3,
  "description": "Simulates information a color blind person receives and/or adds a daltonization filter",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "LetsGetColorBlindContent.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "action": {
    "default_title": "Add/remove color blind filter",
    "default_icon": {
      "19": "icon-19.png",
      "38": "icon-38.png"
    },
    "default_popup": "LetsGetColorBlindPopup.html"
  },
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "host_permissions": [
    "*://*/*"
  ],
  "permissions": [
    "storage"
  ]
}