Examine source code of Marvel Bad Guys

{
  "theme": {
    "images": {
      "theme_frame": "vill1.0.jpg"
    },
    "colors": {
      "frame": "#fcfcfc",
      "tab_background_text": "#00fae1"
    }
  },
  "version": "2.0",
  "name": "Marvel Bad Guys",
  "manifest_version": 2,
  "description": "villains magneto venom carnage green goblin hobgoblin tombstone carrion mysterio mesmero galactus terrax thanos mephisto deathbird apocalypse stryfe sabertooth omega red doctor doom bullseye skorge kingpin hulk wolverine"
}