Examine source code of Coolest_Guitar

{
  "theme": {
    "images": {
      "theme_frame": "Head_2.jpg"
    },
    "colors": {
      "frame": "#5ff216",
      "tab_background_text": "#5ff216"
    }
  },
  "version": "2.0",
  "name": "Coolest_Guitar",
  "manifest_version": 2,
  "description": "That's the coolest electricguitar I've ever owned :-)"
}