Examine source code of ThingsOfOldJapan

{
  "theme": {
    "images": {
      "theme_frame": "ThingsOfOldJapan.jpg"
    },
    "colors": {
      "frame": "#827878",
      "tab_background_text": "#120e0e"
    }
  },
  "version": "2.0",
  "name": "ThingsOfOldJapan",
  "manifest_version": 2,
  "description": "Things of old Japan. Geisha girl, bamboo, fish,crane and more.\nYou download you get double happiness."
}