List Highlighter for Trello

Change list background colours
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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "List Highlighter for Trello",
  "description": "Change list background colours",
  "version": "5.0.2",
  "author": "Mark Kenny",
  "homepage_url": "https://beingmrkenny.co.uk/web-extensions/list-highlighter-trello",
  "options_ui": {
    "page": "options-page/index.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "js/third/autosize.js",
        "js/classes/Global.js",
        "js/classes/Color.js",
        "js/classes/StorageLegacy.js",
        "js/classes/Options.js",
        "js/classes/Rules.js",
        "js/classes/DataStorage.js",
        "js/front-end/InsertedCSS.js",
        "js/front-end/RulesMatcher.js",
        "js/front-end/TrelloPage.js",
        "js/front-end/System.js",
        "js/functions.js",
        "js/init.js"
      ],
      "matches": [
        "*://trello.com/*"
      ],
      "run_at": "document_start"
    },
    {
      "css": [
        "css/style.css"
      ],
      "matches": [
        "*://trello.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "16": "img/192.png",
    "32": "img/192.png",
    "48": "img/192.png",
    "64": "img/192.png",
    "256": "img/256.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "img/buttonIcon.png",
        "img/buttonIconOff.png",
        "img/expand.svg"
      ],
      "matches": []
    }
  ],
  "background": {
    "service_worker": "js/background.js"
  },
  "action": {
    "default_title": "List Highlighter",
    "default_popup": "popup.html",
    "default_icon": "img/buttonIcon.png"
  }
}