Examine source code of Nerd Herd 1

{
  "theme": {
    "images": {
      "theme_frame": "Nerdherdbanner.png"
    },
    "colors": {
      "frame": "#d91515",
      "tab_background_text": "#e3dada"
    }
  },
  "version": "2.0",
  "name": "Nerd Herd 1",
  "manifest_version": 2,
  "description": "Nerd Herd from Chuck"
}