Examine source code of Nikon Photography

{
  "theme": {
    "images": {
      "theme_frame": "newheader.jpg"
    },
    "colors": {
      "frame": "#cc0000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Nikon Photography",
  "manifest_version": 2,
  "description": "This is my photographer theme. I needed it to be in dark colors so my photographs will look nice when I look at them in my browser.\n\nEnjoy!"
}