Examine source code of Fox (Black/Silver/Gold)

{
  "name": "Fox (Black/Silver/Gold)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "oie_gcKnhBZt0Okn.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(168, 168, 168, 1)",
      "toolbar": "rgba(255, 255, 255, 0.13)",
      "bookmark_text": "rgba(168, 168, 168, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.24)",
      "toolbar_field_text": "rgba(168, 168, 168, 1)",
      "tab_line": "rgba(168, 168, 168, 0.26)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5fb1dcd5-f9f6-4d42-bce9-df51a89a41de}"
    }
  }
}