Examine source code of Mario Bros NES

{
  "theme": {
    "images": {
      "theme_frame": "mario-1-1.JPEG"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Mario Bros NES",
  "manifest_version": 2,
  "description": "This is my first persona. It shows the layout of the first two levels of Super Mario Bros. on the NES."
}