Examine source code of Civilization 5

{
  "theme": {
    "images": {
      "theme_frame": "Civ-5-header.png"
    },
    "colors": {
      "frame": "#333333",
      "tab_background_text": "#ececec"
    }
  },
  "version": "2.0",
  "name": "Civilization 5",
  "manifest_version": 2,
  "description": "Civilization 5 video game"
}