Examine source code of The paper folding.

{
  "theme": {
    "images": {
      "theme_frame": "c-0208-rose-mei-oo.jpg"
    },
    "colors": {
      "frame": "#faf2f0",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The paper folding.",
  "manifest_version": 2,
  "description": "折り紙をどうぞ。↓\n\n\n\nばらの画像に変更：120209\nc-0208-rose-mei-oo-←差替えました。"
}