Examine source code of oldsubbuteo

{
  "theme": {
    "images": {
      "theme_frame": "subbh01a.jpg"
    },
    "colors": {
      "frame": "#f2fce0",
      "tab_background_text": "#1c3602"
    }
  },
  "version": "2.0",
  "name": "oldsubbuteo",
  "manifest_version": 2,
  "description": "for subbuteo lovers"
}