Examine source code of Emails and Colors

{
  "manifest_version": 3,
  "name": "Emails and Colors",
  "short_name": "Emails and Colors",
  "description": "Send beautiful emails. Personal and professional email templates in your favorite email clients",
  "action": {
    "default_popup": "src/pages/popup/index.html",
    "default_icon": {
      "32": "icon-32.png"
    }
  },
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://api.emailsandcolors.com/"
  ],
  "content_scripts": [
    {
      "js": [
        "assets/browser-polyfill.js-loader-j4YqxqkL.js",
        "assets/index.tsx-loader-B16epdAL.js"
      ],
      "matches": [
        "*://*.gmail.com/*",
        "*://*.hotmail.com/*",
        "*://*.outlook.live.com/*",
        "*://*.mail.google.com/*",
        "*://*.mail.yahoo.com/*",
        "*://*.mail.yandex.com/*",
        "*://*.mail.protonmail.com/*",
        "http://localhost:8088/*",
        "*://*.emailsandcolors.test/*",
        "*://*.emailsandcolors.com/*"
      ],
      "css": [
        "contentStyle.css",
        "assets/index-DFl65VwO.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "type": "module"
  },
  "web_accessible_resources": [
    {
      "matches": [],
      "resources": [
        "contentStyle.css",
        "icon-128.png",
        "icon-32.png"
      ]
    },
    {
      "matches": [
        "*://*.emailsandcolors.com/*",
        "*://*.emailsandcolors.test/*",
        "*://*.gmail.com/*",
        "*://*.hotmail.com/*",
        "*://*.mail.google.com/*",
        "*://*.mail.protonmail.com/*",
        "*://*.mail.yahoo.com/*",
        "*://*.mail.yandex.com/*",
        "*://*.outlook.live.com/*",
        "http://localhost:8088/*"
      ],
      "resources": [
        "assets/browser-polyfill-Brei1ZTY.js",
        "assets/browser-polyfill.js-CHO0fM7d.js",
        "assets/comms-BTVbbwZY.js",
        "assets/icons-C50wpenV.js",
        "assets/index.tsx-Byn1RfBs.js"
      ]
    }
  ],
  "version": "0.0.3",
  "browser_specific_settings": {
    "gecko": {
      "id": "emails-and-colors@rhjacobs.co",
      "strict_min_version": "109.0"
    }
  }
}