Examine source code of Circulando animado

{
  "name": "Circulando animado",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "anigif02.gif"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(13, 2, 2, 0.39)",
      "toolbar": "rgba(41, 35, 35, 0.23)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(20, 9, 9, 0.37)",
      "toolbar_field_text": "rgba(181, 174, 174, 1)"
    }
  }
}