Examine source code of Barn Owl by M♥Donna

{
  "name": "Barn Owl by M♥Donna",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Barn OwlH.jpg"
    },
    "colors": {
      "frame": "rgba(43, 37, 30, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(46, 40, 32, 0)",
      "bookmark_text": "rgba(227, 218, 218, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.07)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f271cb58-6482-44ba-b6f3-0b98a71eef40}"
    }
  }
}