Examine source code of spirited away gif

{
  "name": "spirited away",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "ezgif-4-291eb3340e.gif"
    },
    "colors": {
      "frame": "rgba(99, 74, 65, 1)",
      "tab_background_text": "rgba(167, 209, 207, 1)",
      "toolbar": "rgba(167, 209, 208, 0.74)",
      "bookmark_text": "rgba(99, 74, 65, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.7)",
      "toolbar_field_text": "rgba(156, 181, 136, 1)",
      "tab_line": "rgba(245, 245, 245, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{eda3a662-695a-43d4-b13b-647c7d5db4f3}"
    }
  }
}