Examine source code of Double Dragon cartooon

{
  "theme": {
    "images": {
      "theme_frame": "BrowserHeadlinerDoubleDragon.jpg"
    },
    "colors": {
      "frame": "#fcfcfc",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Double Dragon cartooon",
  "manifest_version": 2,
  "description": "I created this using a black and yellow gradiant and the double dragon logo"
}