Examine source code of More Marvelous 3

{
  "name": "More Marvelous 3",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Screenshot 2024-06-12 064232.png"
    },
    "colors": {
      "frame": "rgba(232, 233, 235, 0)",
      "tab_background_text": "rgba(0, 0, 0, 0)",
      "toolbar_field": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{63d2ee53-7830-49ed-b241-e8097dc6dbc3}"
    }
  }
}