Examine source code of NES Controller Design

{
  "theme": {
    "images": {
      "theme_frame": "NEShead.jpg"
    },
    "colors": {
      "frame": "#a8a5a5",
      "tab_background_text": "#9e9b9b"
    }
  },
  "version": "2.0",
  "name": "NES Controller Design",
  "manifest_version": 2,
  "description": "Old Skool Game Controller design with grey text.\nEnjoy."
}