Examine source code of Silver and Blue

{
  "theme": {
    "images": {
      "theme_frame": "BrowserHeaderSilverandBlue.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Silver and Blue",
  "manifest_version": 2,
  "description": "I created and grey and darker grey bottom and I madea gradiant. I then put on top a blue gradiant. I then put a darker blue strip below the blue gradant. I also keep the bottom a grey gradiant"
}