Examine source code of JA INFORMATICA

{
  "name": "JA INFORMATICA",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "logotipo.gif"
    },
    "colors": {
      "frame": "rgba(164, 187, 235, 0)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.18)",
      "toolbar_field_text": "rgba(0, 0, 0, 0.95)"
    }
  }
}