Examine source code of decrepid ruins

{
  "theme": {
    "images": {
      "theme_frame": "ancientruins.jpg"
    },
    "colors": {
      "frame": "#65b7f5",
      "tab_background_text": "#c4a418"
    }
  },
  "version": "2.0",
  "name": "decrepid  ruins",
  "manifest_version": 2,
  "description": "old temple ruins"
}