Examine source code of 3D Cubes 2023

{
  "name": "3D Cubes",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "3D Cubes.png"
    },
    "colors": {
      "frame": "rgba(3, 3, 3, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0.46)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(3, 255, 242, 0.58)",
      "toolbar_field_text": "rgba(173, 252, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5f1bb455-72d6-435f-8a21-7c0c8b633811}"
    }
  }
}