Examine source code of Simple Fire

{
  "name": "Simple Fire",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "download.jpg"
    },
    "colors": {
      "frame": "rgba(255, 123, 0, 1)",
      "tab_background_text": "rgba(97, 51, 51, 1)",
      "toolbar": "rgba(219, 213, 52, 1)",
      "bookmark_text": "rgba(255, 0, 0, 1)",
      "toolbar_field": "rgba(168, 12, 12, 1)",
      "toolbar_field_text": "rgba(255, 0, 0, 1)",
      "tab_line": "rgba(92, 27, 27, 1)"
    }
  }
}