Examine source code of Brothers Anime Inspired

{
  "manifest_version": 3,
  "name": "Original Brothers Anime Inspired",
  "version": "1.0.3",
  "description": "A premium dark crimson cinematic Firefox experience with an original anime-inspired toolbar theme and polished custom new tab page.",
  "icons": {
    "48": "assets/icon-48.png",
    "96": "assets/icon-96.png",
    "128": "assets/icon-128.png"
  },
  "permissions": [
    "theme"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "original-brothers-anime-inspired@local.theme",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "chrome_url_overrides": {
    "newtab": "newtab/newtab.html"
  }
}