Examine source code of Gantzain2

{
  "theme": {
    "images": {
      "theme_frame": "Gantz.jpg"
    },
    "colors": {
      "frame": "#8c0d0d",
      "tab_background_text": "#150b8a"
    }
  },
  "version": "2.0",
  "name": "Gantzain2",
  "manifest_version": 2,
  "description": "Gantz"
}