Examine source code of lightningfire

{
  "name": "lightningfire",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "lightningfire.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(240, 250, 249, 1)",
      "bookmark_text": "rgba(181, 18, 18, 1)",
      "toolbar_field": "rgba(247, 239, 134, 1)",
      "toolbar_field_text": "rgba(13, 13, 15, 1)"
    }
  }
}