Examine source code of mangas br

{
  "name": "mangas br",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Papirus-Team-Papirus-Apps-Subsurface-icon.128.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f5ac5359-8e49-44d1-830f-02680c417bd7}"
    }
  }
}