Examine source code of Daylight Cycle

{
  "manifest_version": 2,
  "name": "Daylight Cycle",
  "version": "1.6",
  "description": "A living sky in your browser: real moon phases, twinkling stars, shooting stars, drifting clouds, and live weather — rain, snow, fog, and storms with lightning — all following your real local time.",
  "browser_specific_settings": {
    "gecko": {
      "id": "daylight-cycle@themes.bighomieced.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "locationInfo"
        ]
      }
    }
  },
  "permissions": [
    "theme",
    "storage",
    "geolocation",
    "https://api.open-meteo.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}