Examine source code of Each work area. .

{
  "theme": {
    "images": {
      "theme_frame": "j0125--sorezno-hadestone-igawaku-l3.jpg"
    },
    "colors": {
      "frame": "#e3d3d3",
      "tab_background_text": "#eff5bf"
    }
  },
  "version": "2.0",
  "name": "Each work area. .",
  "manifest_version": 2,
  "description": "それぞれのワークエリア。。\n\n\n\n\nj0125--sorezno-hadestone-igawaku-l3"
}