Examine source code of Falcon9 SpaceX

{
  "name": "Falcon9 SpaceX",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "FIREFOX THEME PLUGIN - FALCON 9 SPACEX.png"
    },
    "colors": {
      "frame": "rgba(225, 228, 232, 1)",
      "tab_background_text": "rgba(255, 250, 250, 1)",
      "toolbar": "rgba(255, 245, 245, 0)",
      "bookmark_text": "rgba(240, 231, 231, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  }
}