Examine source code of Amazing Grace III

{
  "name": "Amazing Grace III",
  "manifest_version": 2,
  "version": "1.1",
  "theme": {
    "images": {
      "theme_frame": "amazingstar.png"
    },
    "colors": {
      "frame": "rgba(35, 90, 219, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(219, 72, 72, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{65972aff-cc7f-4037-adf3-850d61c9f85a}"
    }
  }
}