Examine source code of Zaraki the demon

{
  "theme": {
    "images": {
      "theme_frame": "zaraki1.jpg"
    },
    "colors": {
      "frame": "#4f0202",
      "tab_background_text": "#fceb03"
    }
  },
  "version": "2.0",
  "name": "Zaraki the demon",
  "manifest_version": 2,
  "description": "zaraki"
}