Examine source code of Fate/Flowers

{
  "name": "Fate/Flowers",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Fate Background Wallpaper 1.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(31, 31, 31, 1)",
      "bookmark_text": "rgba(222, 255, 227, 1)",
      "toolbar_field": "rgba(85, 145, 55, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fb4ff38a-5eaf-4162-9427-c843c4e83d6a}"
    }
  }
}