Examine source code of Phoenix in Flight

{
  "theme": {
    "images": {
      "theme_frame": "phoenix.jpg"
    },
    "colors": {
      "frame": "#d40808",
      "tab_background_text": "#c40606"
    }
  },
  "version": "2.0",
  "name": "Phoenix in Flight",
  "manifest_version": 2,
  "description": "a bird on fire"
}