Examine source code of Flying Whales

{
  "name": "Flying Whales",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Firefox banner1.png"
    },
    "colors": {
      "frame": "rgba(232, 217, 142, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0.23)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.43)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(2, 174, 204, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4de2d622-b9e7-4f09-b9a9-546099142a72}"
    }
  }
}