Examine source code of PRJX Dark Mode Lite

{
  "manifest_version": 2,
  "name": "PRJX Dark Mode Lite",
  "version": "2.3.2",
  "description": "Dark theme for PRJX website with multiple profiles (without auto/strict).",
  "permissions": [
    "tabs",
    "storage",
    "scripting",
    "activeTab"
  ],
  "background": {
    "type": "module",
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.prjx.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://www.prjx.com/*"
      ],
      "js": [
        "prjx-shortcuts.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "prjx-dark-mode-lite@prjx.dev",
      "strict_min_version": "112.0"
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  }
}