Examine source code of Daniel Collada Sierra

{
  "name": "InternetFree",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "donde-leer-manga.png"
    },
    "colors": {
      "frame": "rgba(159, 55, 191, 1)",
      "tab_background_text": "rgba(145, 113, 113, 1)",
      "toolbar": "rgba(163, 49, 49, 1)",
      "bookmark_text": "rgba(102, 68, 68, 1)",
      "toolbar_field": "rgba(161, 58, 58, 1)",
      "toolbar_field_text": "rgba(128, 59, 59, 1)"
    }
  }
}