Examine source code of peanuts christmas

{
  "name": "peanuts christmas",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "download (3).jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 0.76)",
      "tab_background_text": "rgba(98, 133, 94, 1)",
      "toolbar": "rgba(61, 117, 100, 0.28)",
      "bookmark_text": "rgba(148, 81, 88, 1)",
      "toolbar_field": "rgba(69, 128, 83, 0.29)",
      "toolbar_field_text": "rgba(135, 62, 62, 1)",
      "tab_line": "rgba(81, 141, 173, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{09e5036c-5188-409d-ae69-3a60d2f08814}"
    }
  }
}