Examine source code of Holiday Joys

{
  "name": "Holiday Joys",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "christmas.jpg"
    },
    "colors": {
      "frame": "rgba(255, 0, 60, 1)",
      "tab_background_text": "rgba(184, 14, 14, 1)",
      "toolbar": "rgba(224, 27, 34, 0.36)",
      "bookmark_text": "rgba(224, 27, 34, 0.36)",
      "toolbar_field": "rgba(199, 36, 36, 0.42)",
      "toolbar_field_text": "rgba(199, 36, 36, 0.42)"
    }
  }
}