Examine source code of Guitars Dream 6

{
  "name": "Guitars Dream 6",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "0.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 255, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6cac6c70-201c-4eb9-8639-3732d25a8133}"
    }
  }
}