Examine source code of bart simpsons punishment

{
  "theme": {
    "images": {
      "theme_frame": "bart.jpg"
    },
    "colors": {
      "frame": "#233b2a",
      "tab_background_text": "#fafafa"
    }
  },
  "version": "2.0",
  "name": "bart simpsons punishment",
  "manifest_version": 2,
  "description": "simpsons, bart, tafel, computer, desk, blackboard, chalk, chalkboard, homer, lisa, quote, nasty, yellow, green, white, black, dark"
}