Examine source code of SumerBob

{
  "theme": {
    "images": {
      "theme_frame": "Bobespongayou.jpg"
    },
    "colors": {
      "frame": "#574545",
      "tab_background_text": "#ad6d6d"
    }
  },
  "version": "2.0",
  "name": "SumerBob",
  "manifest_version": 2,
  "description": "Bob esponga"
}