Examine source code of magic circle99

{
  "theme": {
    "images": {
      "theme_frame": "magicedited.jpg"
    },
    "colors": {
      "frame": "#c40a0a",
      "tab_background_text": "#0069c4"
    }
  },
  "version": "2.0",
  "name": "magic circle99",
  "manifest_version": 2,
  "description": "magic circle"
}