Examine source code of Tezuka BlackJack

{
  "theme": {
    "images": {
      "theme_frame": "Black-jack_Header.jpg"
    },
    "colors": {
      "frame": "#999797",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Tezuka BlackJack",
  "manifest_version": 2,
  "description": "Osamu Tezuka's Black Jack"
}