Examine source code of Gray Metal Hole

{
  "theme": {
    "images": {
      "theme_frame": "graymetalhole.jpg"
    },
    "colors": {
      "frame": "#2b2b2b",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Gray Metal Hole",
  "manifest_version": 2,
  "description": "aluminum grill...created in photoshop["
}