Examine source code of Da Vinci Arms

{
  "theme": {
    "images": {
      "theme_frame": "arm.jpg"
    },
    "colors": {
      "frame": "#edc58a",
      "tab_background_text": "#3d1f04"
    }
  },
  "version": "2.0",
  "name": "Da Vinci Arms",
  "manifest_version": 2,
  "description": "Da Vinci's anatomical drawings of the human arm.  Will fit a 1280x88 pixel monitor (i.e., the image will actually fit your screen)"
}