Examine source code of Power Grid

{
  "theme": {
    "images": {
      "theme_frame": "Boxsideeditcopy.jpg"
    },
    "colors": {
      "frame": "#2a4217",
      "tab_background_text": "#8fd959"
    }
  },
  "version": "2.0",
  "name": "Power Grid",
  "manifest_version": 2,
  "description": "Power Grid the board game by Friedemann Friese"
}