Examine source code of beautiful fall leaves

{
  "theme": {
    "images": {
      "theme_frame": "fallleaves_01.jpg"
    },
    "colors": {
      "frame": "#c70606",
      "tab_background_text": "#ff7d7d"
    }
  },
  "version": "2.0",
  "name": "beautiful fall leaves",
  "manifest_version": 2,
  "description": "色が奏でるシンフォニー。カタチが歌う優しいメロディー。\nそのハーモニーが秋の歩道に満ちて、暖かな想いに包まれる。"
}