Examine source code of batman fly

{
  "name": "batman fly",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "batman Firefox.jpg"
    },
    "colors": {
      "toolbar": "rgba(13, 12, 12, 1)",
      "toolbar_field": "rgba(122, 0, 0, 1)",
      "toolbar_field_text": "rgba(108, 150, 2, 1)",
      "frame": "rgba(38, 40, 43, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(93, 128, 24, 1)"
    }
  }
}