Examine source code of Dancing Skeletons

{
  "theme": {
    "images": {
      "theme_frame": "transkelhdr1.jpg"
    },
    "colors": {
      "frame": "#12fa0a",
      "tab_background_text": "#2e0ced"
    }
  },
  "version": "2.0",
  "name": "Dancing Skeletons",
  "manifest_version": 2,
  "description": "Dancing Skeletons"
}