Examine source code of Longhorns Sunset

{
  "name": "Longhorns Sunset",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "H.jpg"
    },
    "colors": {
      "frame": "rgba(105, 49, 25, 1)",
      "tab_background_text": "rgba(255, 255, 0, 1)",
      "toolbar": "rgba(107, 53, 26, 0)",
      "bookmark_text": "rgba(255, 255, 0, 1)",
      "toolbar_field": "rgba(107, 53, 26, 0.06)",
      "toolbar_field_text": "rgba(255, 255, 0, 1)",
      "tab_line": "rgba(255, 255, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{078c96c7-521d-458a-b433-e03f0fa27a2f}"
    }
  }
}