Examine source code of Leaf Fall

{
  "name": "Leaf Fall",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "Без-имени-2.png"
    },
    "colors": {
      "toolbar": "rgba(69, 24, 24, 0.92)",
      "toolbar_field": "rgba(69, 24, 24, 0.92)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "frame": "rgba(69, 24, 24, 0.92)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)"
    }
  }
}