Examine source code of Blue puzzle pieces

{
  "name": "Blue puzzle pieces",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "download (9).jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(176, 180, 255, 1)",
      "bookmark_text": "rgba(62, 63, 107, 1)",
      "toolbar_field": "rgba(62, 63, 107, 1)",
      "toolbar_field_text": "rgba(176, 180, 255, 1)",
      "tab_line": "rgba(62, 63, 107, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c220b5b-b241-4210-84b2-d72d87932b4c}"
    }
  }
}