Examine source code of McLaren theme2

{
  "name": "McLaren theme2",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Skjermbilde 2024-04-21 150403.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 128, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(255, 128, 0, 1)",
      "toolbar_field": "rgba(255, 128, 0, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 128, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7b470e18-002d-4950-b627-e222afe5fdf4}"
    }
  }
}