Examine source code of Catppuccin Selector

{
  "browser_specific_settings": {
    "gecko": {
      "id": "catppuccin@federicoscodelaro.com"
    }
  },
  "manifest_version": 2,
  "name": "Catppuccin",
  "version": "1.2",
  "description": "Allows you to select a catppucin theme for light and dark mode",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage",
    "theme"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png",
    "128": "icons/128.png",
    "256": "icons/256.png",
    "512": "icons/512.png"
  }
}